Speed: 10 11 12 speed, compatible with Shimano, SRAM (Sram XD incompatible)

Number of teeth: 12 speed 11-50T

Number of teeth: 11-13-15-17-19-21-24-28-32-36-42-50T

Material: imported steel from Japan + aluminum alloy bracket

Weight: Super light about 621G

Introduction: 12 speed 50T wide tooth gear mountain flywheel, large tooth flywheel, single disc wheel climbing more easily, aluminum alloy bracket, hollow design, lighter weight.