This is a level wind guide that can be attached to Abu Garcia's Revo 4 series. It has a megaphone design like Shimano's, which improves line release. Also, the inside of the guide is ceramic, making it perfectly compatible with PE braided lines. It can be installed on the 18 Revo X.SX, 18 Revo Elite series, Rocket 10, etc., as they share the same base. The third and fourth images are comparison images with the original guide.