This is a universal sheath for fixed knives. It is made for Spartan Blades, specifically for the Difensa model. But this doesn't alter the fact that it is also an excellent fit for many other fixed knives.
This sheath is made from nylon with a plastic insert. The insert can accommodate a blade up to 40 mm high, 6.5 mm thick and 160 mm long. Slightly smaller than these sizes is not a problem, but the fit will differ per knife. The plastic insert prevents damage to the nylon sheath. There is a layer of velour-like fabric on the inside to prevent rattling. This makes the sheath very quiet. The knife handle is held in place by a loop with a press stud. It has adjustable Velcro and can therefore fit around narrow and thicker handles.
There are lots of carrying options and mounting options for this Difensa sheath. It has MOLLE webbing on the back, a belt loop and a D-ring with paracord so you can secure it to your leg. You'll also find MOLLE webbing on the front so you can attach a multi-tool to a MOLLE sheath, for example.