Böker sells under at least three names on this site and they are not interchangeable. Böker, Böker Plus and Böker Magnum are separate lines from one 1869 Solingen company, built in different places to different briefs, and buying one when you meant another is an easy and expensive mistake. This page is about Böker Plus specifically: fifty two live listings, forty one of them folders, $29.66 to $244.80. It explains what the Plus line actually is, then works down eight folders from $177.26 to $86.58.
Plus is the line Böker builds outside Solingen. It is the cheaper, internationally produced half of the company, running collaborations and production models from factories in several countries, and it is deliberately separate from the German Manufaktur range that carries the core Böker name.
The parent house dates to 1869 and the corporate history, including how the American arm came about, is told once on the Böker Plus brand page rather than repeated here.
So a Böker Plus knife is a real Böker product with the same warranty program, designed under the same roof, and made somewhere other than Solingen. If you specifically want a German-made Böker, the Böker line is the one to shop, and the Böker Magnum line is a third, more budget-focused branch again.
The Plus line is where Böker works with outside designers, and unlike most brands it prints their names on the listings. Three of the eight knives below name theirs: the Icepick Dagger by Chuck Gedraitis, the Kwaiken Air Mini by Lucas Burnley, the Davlin by Midgards Messer.
That is genuinely useful information rather than a marketing flourish. It tells you that a given model started as one person's design rather than as a committee's idea of what sells, and it explains why the Plus catalog is so much more stylistically varied than a single-house line. You will find a Japanese-influenced front-flipper, a dagger and a chunky framelock sitting next to each other under one badge.
The Urban Trapper Petite Cocobolo at $174.56 is the lightest knife on this page at 3.8 ounces, with a 3 inch satin drop point in cocobolo, four inches closed. It is a slim, dressy folder in the mold the Plus line does better than most.
The Kwaiken Air Mini Titanium at $143.06 runs a 3.13 inch blade in a stonewashed titanium handle at 8.3 ounces. Both use VG-10, a Japanese stainless from Takefu Special Steel that the verified profile places in the upper-mid to premium tier at 60 to 62 HRC, with very good edge retention and very good corrosion resistance. Its one caution is that it can be a little more brittle than tougher modern stainless at the top of its hardness range, which is a reason to keep it away from prying rather than a reason to avoid it.
The Icepick Dagger Linerlock at $177.26 is the most expensive knife on this page and the most specialized. A 3.25 inch VG-10 dagger blade, carbon fiber handle, thumb disk, ice blue anodized accents, 8.3 ounces, 4.25 inches closed.
A dagger grind is symmetrical and double-edged in profile, which makes it excellent at penetrating and poor at most ordinary cutting tasks, because there is no belly to draw through material. Buy it because you want that specific object. If you want a knife to open parcels with, the Urban Trapper Petite at almost the same money will do it far better.
Below the VG-10 tier the Plus line shifts to D2, and this is where the value sits. The Petit 42 Framelock at $86.58 is the smallest, a 2.88 inch blade in a 3.25 inch stainless-handled frame at 5.4 ounces. The Ridge Framelock at $98.96 carries the longest blade on this page at 3.5 inches, in G10 over a gray stainless back, at 8.3 ounces.
The Takara Linerlock at $105.56 runs a 3 inch satin blade on black G10 at 6.1 ounces, second lightest of the D2 group behind the Petit 42. The Boker Plus Gemtek at $111.56 runs a 2.88 inch blade in textured gray G10 with red accents, and arrives in a nylon zippered case rather than a box.
D2 is a semi-stainless tool steel rated in the same very good band as VG-10 for edge retention and well behind it for corrosion resistance, so the two tiers here are a genuine choice and not simply better and worse, as D2 vs VG-10 sets out. The D2 guide lays the trade out in full.
The Boker Plus Davlin Folder Drop at $161.96 needs its own note, because its numbers look wrong until you understand them. It is a 2.88 inch blade in a 3.75 inch closed frame that weighs 11.2 ounces, which is more than three times the Urban Trapper Petite for a shorter blade.
That mass is sculpted G10 over a stainless back handle in a deliberately overbuilt Midgards Messer design. It is not a knife that disappears in a pocket and it is not trying to be. If you have ever wanted a small folder that feels like a tool rather than an accessory, this is the one on this page. If pocket weight is a consideration at all, it is emphatically not.
This page spans 3.8 ounces to 11.2 ounces, roughly threefold, on knives whose blades all fall between 2.88 and 3.5 inches. That is the single most useful pattern in the Plus catalog: blade length barely moves and carry weight moves a lot.
Titanium and stainless handles are heavy. Carbon fiber and wood are light. G10 sits between them and depends on how much steel is behind it. If you carry clipped to a pocket, weight is the number that decides whether the knife stays in your rotation, and it is the one most listings bury at the bottom of the spec table.
These eight split exactly down the middle: four framelocks and four linerlocks. The framelocks are the Davlin, the Gemtek, the Ridge and the Petit 42. The linerlocks are the Icepick Dagger, the Urban Trapper Petite, the Kwaiken Air Mini and the Takara.
The practical difference is thickness and feel. A framelock uses a milled slab of the handle itself as the lock bar, so it tends to be stiffer and more positive, and it needs a rigid handle material behind it. Every framelock here is G10 or stainless for that reason. A linerlock uses a thinner internal leaf, which frees the outer scales to be something softer or more decorative, and that is how the cocobolo and carbon fiber knives on this page are built.
The Kwaiken Air Mini is the one that does not follow the pattern, running a linerlock inside a titanium handle. Titanium is the material most often used for framelocks, so that is a deliberate design choice rather than an accident of the material.
Warranty coverage is identical across all three Böker lines and is set out on the brand pages. In short it protects the first owner against material and workmanship faults, and it does not cover wear or misuse.
All eight of the knives on this page are listed as made in China, which is the most common origin within the Plus line rather than the only one. If country of manufacture is a deciding factor for you, the honest thing to say is that the Plus line is where Böker builds internationally on purpose, and the German-made core line is the answer to that question rather than a different Plus model.
For most people the Takara at $105.56 is the sensible entry: D2, a plain 3 inch blade, G10, six ounces, nothing eccentric. From there the Ridge buys you half an inch more blade for six dollars, and the Petit 42 saves you nineteen dollars for a smaller knife in a metal handle.
Step up to VG-10 if corrosion resistance matters or if you want a knife to look at as well as use, and the Urban Trapper Petite is the one to look at first. Three of these eight are above the $149 free shipping threshold; the other five sit under it. All of it is in stock in Woodlawn, Virginia. The full Plus range, including the gear and multi-tools this page does not cover, sits on the Böker Plus brand page.