Ocean Pro Scorpion Knife with Locking Sheath, Black/Blue If you're looking for an economical dive knife then the Ocean Pro Scorpion just might fit the bill. The Ocean Pro Scorpion is made from 304 Grade Stainless Steel with a 4.7" (12 cm) Pointed Blade. The Knife Bladed has a Straight Edge on one side with a Partial Serrated Edge on the other. The Serrated side of the Blade also is equipped with a Line Cutter. The Impact Resistant Handle has a Positive Grip and has a Metal Hammer End. The Ocean Pro Scorpion Knife comes with a Quick-Release Locking Noncorrosive Plastic Sheath with Adjustable Straps for mounting on the diver's leg or gear.