If you're looking for an economical dive knife then the Ocean Pro Black Widow just might fit the bill. The Ocean Pro Black Widow is made from 304 Grade Stainless Steel with a 5" (14 cm) Pointed Tip Blade. The Knife Blade is a Double Edge Serrated Style with a Wide Hilt. Knife has a Low Profile Design Impact Resistant Handle that is ribbed for a Positive Grip and has an Integrated Metal Rim. The Ocean Pro Black Widow Knife comes with a Quick-Release Locking Noncorrosive Plastic Sheath with Adjustable Straps for mounting on the diver's leg or gear.