Key takeaways
- Searching for a Ninja knife set means you have already narrowed the field to one brand and one idea: a block whose sharpening system is part of the design.
Searching for a Ninja knife set means you have already narrowed the field to one brand and one idea: a block whose sharpening system is part of the design. Ninja sells that idea under the NeverDull name, and the product titles repeat it constantly, with claims about staying sharp for ten or more years, removable sharpeners, and German stainless steel. The real decision is which version of that idea fits your counter, because the lineup varies in size from ten pieces to seventeen.
This guide is for cooks who like the concept of a block that sharpens knives as they are drawn out, and who want to choose between the Premium, Space Saving, and larger Foodi-style configurations. It relies strictly on what the listings state. Where a title makes a long-life edge claim, treat it as the seller’s statement, not a measured result, and weigh it alongside the spec details below. Five distinct Ninja sets are covered for 2026 shoppers.
Quick Picks
Our top picks
As an Amazon Associate we earn from qualifying purchases at no extra cost to you.
| Product | Best for | Key spec from the title |
|---|---|---|
| Ninja Premium 11-piece (WK62011) | Flexible counter layouts | Removable sharpener, 45% smaller footprint without sharpener and steak knives |
| Ninja NeverDull 10-piece | Basic NeverDull entry | Premium German steel, removable sharpener |
| Ninja Space Saving 10-piece (NK32010) | Tight counters | Sharpen on or off block, rust-resistant blades |
| Ninja Foodi K32012 12-piece | Mid-size built-in system | Built-in sharpener, German stainless steel |
| Ninja K32017 17-piece | Maximum knives | Built-in sharpener, rust-resistant German stainless steel |
How to Choose
Decide between removable and built-in sharpening
The biggest split in the lineup is where the sharpener lives. Removable designs let you detach the sharpener and shrink the block, which helps in cramped kitchens. Built-in versions keep everything in one body and are simpler to use, since the sharpening happens as you draw the knife in or out. If counter depth is your limit, favor the removable models. If you want zero thought, favor built-in. Either way, give the system a few uses before judging, because the motion differs from a honing steel. Pull the knife through smoothly rather than forcing it, and keep a dry cloth nearby so moisture does not collect in the slots.
Match piece count to the knives you will actually use
Counts like ten, eleven, twelve, and seventeen pieces include steak knives, shears, and the block itself in the math. Compare the working blade count, not the headline number. A ten-piece set is typically enough for chef, utility, paring, and bread tasks. Seventeen pieces suits households that serve steak regularly and want everything matched. Remember that a larger set means a larger block and a heavier footprint, so measure the space before you click. Think about reach as well: a block placed under a low cabinet can make the tallest knives awkward to lift out, which is a daily annoyance that no spec sheet mentions.
Treat long-life sharpness claims as claims
Several titles state that blades stay razor-sharp for ten or more years. That is a manufacturer statement, and real-world edge life depends on what you cut, how you wash, and how often you use the sharpener. Cutting on glass or stone, scraping a board with the edge, and dishwasher cycles all shorten edge life regardless of the system. The sensible reading is that the sharpening system should make maintenance easy, not that maintenance disappears.
Check steel, finish, and what comes in the box
Titles name German stainless steel and rust-resistant finishes, which are useful category cues. Look for whether steak knives are included, since that changes the footprint calculation. Cheaper block sets from other makers often cut corners by supplying thin blades and loose rivets, so the value of a branded system is partly in the consistency of the build. Ignore color names; they change the look without changing the knives. Several listings in this family repeat the same model in different finishes, so when two titles differ only by color, treat them as one choice and decide on piece count, sharpener type, and footprint instead.
The 5 Best Options
Ninja Premium 11-Piece Knife Set WK62011
The Premium 11-piece is built around flexibility. The title highlights a removable sharpener and a footprint that is 45 percent smaller when you leave off the sharpener and steak knives. It fits cooks who want to adjust the block to their counter instead of the other way around.
- Strength: the removable sharpener lets you reshape the block to fit a tighter space.
- Strength: the stated 45 percent footprint reduction is a concrete figure to compare against other sets.
- Trade-off: the smaller layout only happens if you give up the sharpener and steak knives.
Skip it if you want every function in a single fixed body or a large knife count. It also asks for a small decision at setup, since you must choose whether the sharpener stays on the counter, and shoppers who dislike configuring things will find a fixed unit easier. Anyone planning to serve steak for a full table should read the contents list closely before ordering.
Ninja NeverDull 10-Piece Knife Set
This ten-piece version carries the NeverDull branding, premium German steel, and a removable sharpener. The title promises blades that stay razor-sharp for ten or more years, which is the headline selling point of the family.
- Strength: German steel and a removable sharpener combine a recognized material with flexible storage.
- Strength: ten pieces is a manageable size for everyday prep without a crowded block.
- Trade-off: the ten-year sharpness line is a manufacturer claim and depends on how you use and wash the knives.
Skip it if you want a built-in sharpener or more than a handful of knives. It is also worth noting that this listing is the plainest of the family, so households that expect extras such as a large steak knife lineup should compare it side by side with the 12-piece and 17-piece versions before committing.
Ninja Space Saving 10-Piece Knife Block Set NK32010
The Space Saving name tells you the intent. The title says you can sharpen on or off the block, and it lists rust-resistant blades. It is the Ninja to look at first if your counter is the constraint.
- Strength: sharpening on or off the block gives you two ways to work around crowded counters.
- Strength: rust-resistant blades are named, which matters if the block sits near the sink.
- Trade-off: ten pieces will not satisfy anyone looking for a large steak knife lineup.
Skip it if you want the biggest set in the family or a fully integrated sharpener. Since the listing leans on space savings, expect a leaner kit overall, and note that cooks who like a heavy, substantial block on the counter may find the compact approach underwhelming in daily use.
Ninja Foodi K32012 NeverDull Premium Knife System, 12-Piece
The K32012 is the mid-size option: twelve pieces, a built-in sharpener, and German stainless steel knives, branded as a premium system. It sits between the compact sets and the seventeen-piece block.
- Strength: the built-in sharpener keeps maintenance inside one unit.
- Strength: twelve pieces is a practical middle ground for most households.
- Trade-off: a built-in sharpener removes the option of a slimmer block.
Skip it if counter space is tight or you prefer removable parts. Shoppers weighing it against the Premium 11-piece should think about whether they would ever actually take the sharpener off. If the answer is no, the fixed design costs nothing and keeps the routine simpler.
Ninja 17-Piece Knife Block Set K32017
The K32017 is the largest set, with seventeen pieces, a built-in sharpener, and rust-resistant German stainless steel. The title again cites a razor-sharp life of ten or more years and NeverDull technology.
- Strength: seventeen pieces gives the widest coverage, with room for steak knives and specialty blades.
- Strength: rust-resistant German stainless steel suits a block near the sink.
- Trade-off: it is the largest footprint of the five, and the sharpener is fixed in place.
Skip it if you cook for one or two people or have limited counter depth. Check cabinet clearance too, because a block that holds this many knives stands taller than the compact models and may not slide under low wall units. For a small household the extra pieces would mostly gather dust.
Which One Fits Your Situation
Your counter is the limiting factor
Start with the Ninja Space Saving 10-piece, then consider the Premium 11-piece if you want the option to strip the block down further by removing the sharpener. That pairing covers most small kitchens: one set is built around the space-saving idea, the other lets you decide later how much of the system stays on the counter.
You want the simplest possible sharpening
Choose the Ninja K32012 Foodi 12-piece. Its built-in sharpener means the maintenance routine is just the normal motion of using the knives. It suits busy households where nobody wants to think about a separate honing step, and its twelve pieces keep the block from feeling oversized.
You serve steak and host often
The Ninja K32017 17-piece offers the most pieces. The block is bigger, but a household that sets a table for guests will use the extra blades. For holiday dinners and weekend gatherings, having matched steak knives in the same block simplifies setup and cleanup.
You want the NeverDull idea without the commitment
The Ninja NeverDull 10-piece gives you German steel and a removable sharpener in a modest package. It is a reasonable starting point if you are unsure how much of the system you will use. If the system wins you over, stepping up to a larger configuration later is straightforward, and the knives you already own will keep working in the kitchen.
Common Mistakes
- Believing that a system with a sharpener never needs any attention; edge care still matters.
- Choosing by color, which changes the look but not the contents or the knives.
- Buying the biggest set without measuring the counter depth and cabinet clearance.
- Cutting on glass, stone, or ceramic plates, which dulls any edge faster than a sharpener can offset.
- Assuming the removable sharpener is optional on every model; check what each listing includes.
How Built-In Sharpeners Work
Most block-based systems place an abrasive inside the slot so the knife is sharpened as it slides in and out. The convenience is real, since you do nothing extra, but the angle is fixed and the abrasive removes a little metal every pass. Over years that can narrow a blade, so ask whether the sharpener can be replaced or swapped out.
Specs and Terms Explained
German stainless steel
The phrase generally refers to a family of stainless alloys common in European cutlery. It signals corrosion resistance and moderate hardness rather than a specific grade, so it does not guarantee a particular edge life.
Removable versus built-in sharpener
A removable unit can be taken out, cleaned and sometimes replaced. A built-in one is simpler but cannot be serviced as easily. If a listing is not clear, expect the second.
Piece count
Counting shears, steak knives and the sharpener itself inflates numbers. Look at the number of different blade lengths instead: a chef knife, a utility, a paring and a bread knife cover most needs.
Setup and Care Tips
- Clean the slots with a dry brush or compressed air from time to time; metal dust and crumbs collect there.
- Insert each knife straight down and pull evenly, rather than twisting inside the slot.
- Do not put a heavily chipped blade through a sharpening slot expecting a repair.
- Hand wash and dry knives before returning them to the block.
- Read the care pages of the manual for warranty conditions; some require specific cleaning methods.
Questions to Ask Before You Buy
- Is the sharpener built in, or can it be removed and replaced?
- Does the block list the angle it sharpens to, and does that suit your knives?
- Does the set include a bread knife and a paring knife, or only larger blades?
- How tall is the block, and will it fit under your cabinets?
- What does the manual say about washing and storing the knives?
Fitting the Block Into Your Kitchen
Blocks with sharpeners tend to be wider and heavier than plain blocks, because the mechanism needs room. Measure your counter depth and the gap under any wall cabinets, and keep the block away from the stove so heat and grease do not reach the slots. If the block is going near a sink, pick a spot where drips will not run into the openings.
Who Should Skip These
If you enjoy sharpening on stones or already own a good manual sharpener, an integrated system may be redundant. Cooks who like very thin Japanese-style edges should be wary of a fixed-angle grind. And anyone who dislikes the look of a large block on the counter should consider a compact option or look at other storage styles altogether.
Related guides
- Black Friday And Cyber Monday Kitchen Deals
- Knife Sharpener For Kitchen Knives
- Cuisinart Air Fryer Toaster Oven Review
Frequently Asked Questions
What does NeverDull mean?
It is Ninja’s name for the sharpening technology built into or attached to the block. The listings tie it to a claim of long-lasting sharpness, which still depends on proper use.
Can I remove the sharpener from every Ninja block?
No. The Premium 11-piece, the NeverDull 10-piece, and the Space Saving 10-piece describe removable or on-off sharpening, while the K32012 and K32017 list a built-in sharpener.
Are Ninja knives dishwasher safe?
The titles reviewed here do not say so, so check the full listing and the care instructions before putting them in the dishwasher. Hand washing is the safer default for any fine edge.
Is a bigger set better value?
Only if you will use the extra pieces. A ten-piece set covers everyday prep, while larger sets add steak knives and specialty blades that suit hosting.
Write Your Review
No reviews yet. Be the first to share your experience!