SUNSHINE XD Cassette 12 Speed 9-50T MTB Bicycle Sprocket Mountain Bike Flywheel Fit for SRAM GX EAGLE Freewheel
Specification: Teeth: 9-11-13-15-18-22-24-28-32-36-42-50T
Color: Black Weight: 540g
1
-11 teeth Ultra high strength steel, hardness 680HV, 12 teeth 7075 aluminum alloy, hardness 170HV
