The Evolution EV-GG48 4-Inch Gorilla Gaff with 3-Inch Hook features lightweight, fiberglass handles designed for strength and rigidity. Lightweight, yet strong with easy-to-grip EVA handles. Evolution Products is a leading manufacturer of fishing tools and accessories. Our products feature a complete line of Control, Weigh and Release tools, filet knives, bait knives, gaffs and other affordable accessories.