The Spyderco Snap-it features a shackle that allow the knife to be attached to a D-Ring, carabiner or similiar platform to hang in a position that is easily accessible. 3" fully serrated blade of H1 stainless steel. Yellow FRN handles with black Kraton insert. Blade and all hardware are 100% rustproof. 5 1/8" total closed length including the shackle. Seki City