Red Tide Spearfishing Knife: Custom made in Italy from super, high-quality 420 stainless steel. This higher carbon stainless steel holds our unique, double serrated edge like no other. The blade is so strong it can cut right through 480 lb stainless steel cable! Our Stiletto designed knife makes braining your catch easy. This is the ultimate spearfishing knife!! The double-serrated edge is great for making burley and gives you the confidence that you can quickly cut your way out of a dangerous situation. Wear it on your arm, leg or dagger style attached to your rubber weight belt. Available in a high polish finish or with a corrosion resistant Teflon finish.