This is the Replacement Clutch Bell for the Street Force GP Kits. FEATURES: Steel Alloy Construction 16T Gear Silver in Color 19T Gear Green in Color INCLUDES: One 16T/19T Clutch Bell REQUIRES: Two 5x8x2.3mm bearing (DTXC1523) jim 6/11/00 updated tjt 4/21/01 ir/jl