"The Marine Sports Paralyzer Tip is ideal for spearfish hunting, especially lionfish and other small to medium-sized saltwater fish. The 3-prong tip is purposefully designed without barbs, so your fish removes easily and without extensive damage. This spearfishing tip from Marine Sports easily attaches to a pole spear (not included) with a 6mm female threaded end. Made of 316 marine-grade stainless steel, which is resistant to most chemicals and saltwater corrosion. Length: 6"". Ideal for spearfishing lionfish and other small to medium fish Made without barbs for easy and safe fish removal 6mm threaded end attaches to pole spear 316 marine-grade stainless steel"