ELITE CASSETTE HUB Profile Racing designed Elite Cassette Hubs to be the best racing hubs available. They are also suitable for trails and light park use.6 pawl system designed for BMX Racing and MTB usage. Also suitable for BMX Trails and light park. 6 pawl driver for 204 points of engagement means instant forward motion at the first application of pedal pressure. 17mm Hex Head outer w/8mm internal hex Button Head w/8mm internal hex CrMo drivers. RHD or LHD(36h & 9t Only) 36h or 28h(RHD Only) Standard BMX 110mm hub width – 3/8’s aluminum axle NOT intended for heavy street riding. Elite Cassette Hub Weights: Hub w/ 3/8 CrMo bolts, Alu Driver, 16t CrMo Cog: 15.15oz / 430gHub w/ 3/8 CrMo bolts, Alu Driver, 16t Elite CrMo Cog: 14.80oz / 421gHub w/ 3/8 CrMo bolts, Alu Driver, 16t Alu Cog: 13.95oz / 396g Hub w/ 3/8 CrMo bolts, Ti Driver, 16t CrMo Cog: 16oz / 455gHub w/ 3/8 CrMo bolts, Ti Driver, 16t Elite CrMo Cog: 15.7oz / 446gHub w/ 3/8 CrMo bolts, Ti Driver, 16t Aluminum Cog: 14.8oz / 420g