Separate Freewheel Sprocket Fits Shimano SRAM MTB Bike 9/10/11/12 Speed Cassette
(1) VG sports 8 9 10 11 12S Mountain Bike type casette Separate flywheel. 4) Mountain flywheel, hollow design,mud hole design, Japan imported steel, ultra high strength, lower weight.The new trend of VG Sports!