This is the Dive Rite Line Cutter w/ Ceramic Blade and Sheath Features: ZrO2 ceramic blade Fiber reinforced nylon body 4 1/2" x 2 1/2" (11.4cm x 6.4cm) Webbing sheath can be mounted vertically or horizontally on webbing up to 2" (5.08cm) 1.8 oz (51 g) The Dive Rite Ceramic Blade Line Cutter makes safety simple. No more rust, no more dulling. Versatile mounting options make sure your cutting tool is where you want it when you need it. Effortlessly slice through fishing line, braided nylon, bungee, neoprene and 2 inch webbing, as well as almost any other entanglement hazard you might encounter at the dive site. A worry-free shielded blade prevents accidental cuts. The last line cutter you&';ll ever need.