The #4 Grander Fighting Grip is CNC machined from 7075 aircraft grade aluminum and designed for the largest of Big Game Fish. They are designed to fit any of the popular #4 or #6 rod butts and #4 rods / custom blades on the market. Every Fighting Grip comes preset from the factory, black in color and with black EVA grips. Custom colors are available upon request. The #4 Grander Fighting Grip is designed for 130# plus, unlimited rods. If your mission is to target grander marlin or giant bluefin tuna, the #4 Grander is an exceptional only choice. Works great with 50W, 80W or 130 size reels.