Benchmade 375BK-1 Shane Sibert Adamas Fixed Blade Knife 4.2″ CruWear Cobalt Black Plain Blade and Skeletonized Handle, Black Injection Molded Sheath

The Benchmade 375BK-1 Shane Sibert Adamas is a 4.2 inch fixed blade in CruWear with a cobalt black plain edge, a skeletonized handle, and a black injection molded sheath. It exists because the last thing a loadout needs is another heavy piece of gear, and this generation of the Adamas has been re-engineered to be stronger than ever while staying light.

Fixed blades earn their place through simplicity. No pivot, no lock, no mechanism to clog with mud or grit, just steel from tip to tang.

What the Benchmade 375BK-1 Shane Sibert Adamas Is and Who Carries It

This is a hard-use field and duty knife designed by Shane Sibert and machined from CPM-CruWear. The steel choice brings upgraded corrosion resistance and toughness front and center, which is exactly what a knife that lives outdoors and gets pressed into prying, batoning, and cutting through stubborn material actually needs.

The skeletonized handle is the weight-saving half of the design. Removing material from the tang cuts ounces without compromising the full-length spine that gives a fixed blade its strength. The Benchmade 375BK-1 Shane Sibert Adamas is aimed at anyone carrying a loaded kit who still wants a knife that can take real abuse.

Key Features

• 4.2 inch CruWear blade with a cobalt black finish and a plain edge
• Machined for upgraded corrosion resistance and toughness over previous versions
• Skeletonized handle that reduces weight without giving up structural strength
• Black injection molded sheath redesigned for low profile mounting
• Sheath affixes with low profile MALICE CLIPS for MOLLE or duty belt carry
• Plain edge geometry that is simple to maintain in the field

Blade, Handle, and Sheath in Detail

CPM-CruWear is a powder metallurgy tool steel, and its reputation rests on toughness. It resists chipping under impact and lateral load better than most very hard stainless steels, which is precisely the failure mode a fixed blade at this size actually faces. The cobalt black finish adds a hard, non-reflective layer over the top.

A 4.2 inch blade length is a deliberate middle ground. It is long enough to handle camp chores, cordage, packaging, and field dressing, but short enough to remain controllable for detail work and easier to carry day to day than a large survival blade.

The redesigned sheath is a genuine upgrade rather than a cosmetic one. Injection molded polymer is rigid, waterproof, and immune to the swelling that leather suffers, and the low profile MALICE CLIPS let it ride flat on MOLLE webbing or a standard duty belt without the bulk of older mounting hardware.

Practical Use, Care, and Mounting

Mount the sheath where you can reach it with either hand, then wear the kit and move around before you commit. A knife that snags on a seat belt or a plate carrier cummerbund is a knife you will eventually leave at home. MALICE CLIPS make repositioning quick, so experiment early and settle later.

Maintenance is straightforward but not optional. CruWear resists corrosion better than earlier tool steels, but it is not stainless. Wipe the blade dry after wet work, keep a light film of oil on bare edges, and rinse salt exposure off promptly rather than at the end of the week.

Sharpening a plain edge in this steel is best done with diamond or quality ceramic abrasives. Maintain the factory angle, work in light passes, and strop to finish rather than grinding aggressively. Add a light, a cleaning kit, or a range bag from our apparel and gear collection to round out the load.

Modify with the times and carry with confidence is the design philosophy here, and the execution matches the pitch. The Benchmade 375BK-1 Shane Sibert Adamas is lighter, tougher, and easier to mount than the blade it replaces. Ships direct to your door, no FFL required.