Böker Plus has exactly one multi-tool in our warehouse: the Credit Card Knife in black, $44.06. One SKU is not a range, and we would rather open with that than dress it up.
So this page does two jobs. It tells you what that one item actually is and who it suits, and then it points you at the brands in the building that do have a real multi-tool range, because if you came here looking for pliers and bit drivers, Böker Plus is not the answer.
It is a flat, card-sized folding knife designed to sit in a wallet slot or a badge holder rather than a pocket. The whole concept is dimensional: it takes up the space of a credit card, so it goes where a folding knife does not.
That solves a specific problem. There are plenty of situations where a clipped pocket knife is impractical or simply not wanted, and where a small blade is still genuinely useful for packages, tape, tags and cordage. A card-format knife lives in a wallet you already carry and is there when a pocket knife is not.
What it is not is a substitute for a real folder. The blade is short, the handle geometry is a compromise dictated by the card format, and it will not do sustained cutting comfortably. Buy it as an addition to a knife rather than as one.
Three cases come up repeatedly.
Travel. A flat, minimal blade is easier to keep track of when moving between places with different rules. Note that this is about convenience and not permission: knives of any kind are prohibited in aircraft cabin baggage, and a card-format knife is still a knife. It goes in checked baggage or it does not travel.
Work settings where a pocket clip is inappropriate. Offices, client sites, formal environments. A wallet card draws no attention.
A backup. The knife you have when your actual knife is in the other jacket, in a toolbox or lost.
Outside those cases, a small conventional folder will serve you better for the same money. The Atlas slip joints at $41.36 and $50.36 are almost exactly this price and are a great deal more knife.
If you want pliers, drivers and a saw rather than a blade in a card, we carry that depth under other brands.
Gerber is the deepest by a wide margin, with 64 multi-tool SKUs in stock. That is the range to browse if you want a full-size plier-based tool with a bit set, or a keychain-scale tool, or anything between.
CIVIVI carries a smaller, more design-led selection.
The full multi-tools category puts all 71 in the building into one grid, which is the fastest way to compare across brands.
The honest guidance: a card knife and a multi-tool solve completely different problems. One is about carrying a blade where a knife will not go. The other is about having pliers and drivers when you are away from a toolbox. Owning both is reasonable; substituting one for the other is not.
If the appeal here is having something useful on you without carrying a knife in the usual sense, there are three ways to solve that and they are not equally good.
A card knife gives you an actual blade, which is the only one of the three that reliably cuts cordage, opens boxes cleanly and trims tape. That is what the $44.06 Credit Card Knife is for.
A keychain tool gives you a pry tip, a driver and a bottle opener with no blade at all. Kershaw's PT-1 and K-Tool at around $6 are the cheapest way to stop using a knife tip as a screwdriver, and they raise none of the questions a blade does in a workplace or a school.
A metal pen is the third option, and the Böker Plus gear shelf has two at $34.16. Genuinely useful, entirely uncontroversial, and it writes.
Being honest about it: most people asking for a card knife would be better served by a keychain tool plus a small folder kept in a bag. The card format is a real solution to a narrow problem rather than a clever replacement for a pocket knife.
Böker Plus is the globally manufactured, more affordable production and collaboration line of Heinr. Böker & Co., the Solingen cutlery house founded in 1869 by Heinrich Böker and Hermann Heuser. The line is made across China, Italy, Spain and the USA, as distinct from Böker's German-made Manufaktur Solingen knives. US distribution runs through Böker USA, Inc. of Denver, Colorado, which has handled the market since 1986.
The wider Böker Plus catalog here runs to 67 SKUs, and its strength is slim, well-finished folders rather than tools. The brand hub covers the whole range, and the gear shelf holds the D2 framelocks and fixed blades.
The Credit Card Knife carries Böker's limited lifetime warranty on material and workmanship to the original owner, the same program applied across Böker, Böker Plus and Böker Magnum.
As always, that covers how the item was made rather than what happens to it in use. On a knife this small, the realistic failure is a bent or snapped tip from levering something, which is misuse rather than a defect. Card knives are for cutting, and their format means there is very little handle to control a forceful stroke, so treat the blade gently and let it slice rather than pry.
One practical note: because it lives in a wallet, this is a knife that gets forgotten. Before any trip through security of any kind, check the wallet. A blade you cannot remember putting there is exactly the kind that gets confiscated.