This is the Cressi Grip Stainless Steel Knife for Scuba Diving Features: Small-sized knife with a tapered blade that makes it ideal for spearfishing. Blade made of stainless steel. Ergonomic non-slip handle grip and a hole to add a lanyard. Sheath included that can be attached to the BCD shoulder strap. 2 rubber straps (included) 20 in (50.8 cm) long. Also available with a black blade. Blade length: 3.1 in (8.1 cm). Knife length: 6.8 in (17.39 cm). Knife weight: 1.7 oz (49 g). The Grip Spear is a small-sized knife with a tapered blade that makes it ideal for spearfishing. The blade is made in stainless steel. It features a high precision dagger point tip. One side is an extra rigid serrated blade for sawing, the other side is a skillfully crafted straight blade.