Böker Heckler & Koch FD04 and FD05 Folders: Black Blades, Red Accents, $5 Apart

Böker's Heckler & Koch line picks up two new folders, and both keep the color palette on a short leash. FD04 and FD05 use black blades, black aluminum handles and black hardware. The only contrast comes from a red ring at the pivot and a red backspacer. My read is that Böker is betting the design will sell the pair on its own, and at these prices that's a reasonable bet.

FD04 sells for $69.95 and FD05 for $74.95, both listed at Böker USA. Both use D2 tool steel, a liner lock and a flipper opener. So the $5 gap doesn't come from steel or lock. It buys a different knife.

FD04 pairs a spring assist with a partially serrated edge

FD04 has a 3.23-inch drop point blade in black-coated D2, with a swedge ground along the spine and serrations cut into the rear half of the edge. Blade stock is 0.12 inches thick, and the knife measures 7.68 inches overall when open.

The spring is what sets FD04 apart in this pair. Once the flipper tab starts the blade moving, the spring drives it open with a snap, which manual folders at this price don't often match. At 4.33 ounces, it's still easy to carry in a pocket for an aluminum-handled knife of this size.

D2 is a sensible steel at this price. In cardboard, rope and strap work it should hold an edge longer than the softer stainless steels found in many folders under $75. The trade-off is that D2 is a tool steel rather than a true stainless, so it wants a wipe of oil now and then to stay happy. If you're used to stainless-only maintenance, that's the one habit to adjust.

Price: $69.95
Where to buy: Böker USA

FD05 goes manual with a longer straight edge

FD05 takes the same formula in a different direction. Its drop point blade measures 3.40 inches, again in black-coated D2, but the edge runs straight from handle to tip with no serrations. Blade stock steps up slightly to 0.13 inches.

Overall length grows to 8.27 inches and weight to 5.29 ounces, so FD05 has more presence in the hand. Opening stays manual through the flipper, with no spring helping the pivot. The lock is the same liner design as FD04.

Reach for FD05 when the job list runs past opening mail. The extra length gives a full four-finger grip for anyone whose hands feel cramped on the smaller knife. A straight edge also pushes through material cleanly, where serrations can tear at it when a cut needs control. That's a fair point, though it cuts both ways: serrations are a plus for some materials and a nuisance for others.

Price: $74.95
Where to buy: Böker USA

Aluminum handles and two hits of red

Both handles are aluminum, milled with the flat planes and hard angles that the Heckler & Koch badge suggests. Each knife has a pocket clip. A lanyard hole sits at the rear of the handle, built into the backspacer on FD04 and at the tail of FD05.

Red appears in exactly two places: an anodized ring around the pivot and the aluminum backspacer. That restraint is the best call in the design. Blacked-out folders are common under $75, but few keep the contrast this disciplined. Many budget knives go all-black and lose the visual hierarchy, so the pivot ring and backspacer give the eye somewhere to land.

Both knives use a steel liner that snaps behind the blade tang as the blade swings open. It's a proven layout, and you can close it one-handed by pushing the liner aside with a thumb. It's also simple to build, which leaves budget for better steel.

FD04 and FD05 side by side

Read down the columns and the split is clean. FD04 is the quicker, lighter knife with the busier edge. FD05 is the longer, heavier knife with the simpler one. Neither charges much for the difference.

Is the $5 worth it?

If you want the same badge for less, Böker's SFP Tactical Folder is the lower-cost option in the line, listed at $59.46 on Amazon. It uses D2 steel, a manual opener and a liner lock, but it has a polypropylene handle where the FD pair has aluminum. That handle difference is the upgrade the FD folders charge for.

Licensed knives often charge for the logo and deliver a soft blade in a plastic handle. This pair charges for the logo too, but the money also buys D2 steel, aluminum handles and, on FD04, a spring. That's a fairer trade than the badge usually gets.

Pick FD04 if you want the fast opener and an edge that handles cord, strap and clamshell packaging without much fuss. Pick FD05 if you want the longer blade and a straight edge for cleaner cuts. Skip both if a sub-3-ounce knife is your ceiling, because neither one pretends to be light. Watch for whether Böker extends the black-and-red look to other blade shapes, since this pair suggests the line is building a clear visual identity around restraint.