IST Dive Knife Scissors With Sheath For Scuba Diving And Spearfishing | Gear, Equipment And Accessories 420-grade stainless steel with pointed tip Use as a dive knife or scissors Includes rubber knife straps Button-press sheath 11-inch knife length The IST Dive Knife Scissors blend two essential pieces of scuba diving gear into one simple tool. The comfortable handle features a wire clasp that holds it shut to use as a dive knife. Open it up and it can be used as a pair of dive scissors, ideal for emergency backup or the need to cut fishing line or rope. With the black sheath, just the press of a button releases the knife, so it makes one-handed use a breeze.