The Hobie Mirage GT Sprocket with Bearings is the replacement plastic sprocket for the Hobie Mirage Drive GT. The GT Sprocket will not replace older sprockets that do not have bearings. The Mirage Drive GT will have a gray drum and sprockets where the V1 and V2 drives have a black drum and sprockets. The GT version also has a decal that says “Glide Technology”. FEATURES -Replacement sprocket for Hobie Mirage Drive GT-Does not replace sprocket from older Mirage Drives that do not have bearings-Steel fin mast not included