Titanium Color,Clear

For Shimano SRAM Bike Cassette Freewheel 10 Speed 11-36/42T Sprocket MTB Cycling. Bicycle Bike Torque Wrench Allen Key Set Portable Repair Tool Kit 3-10 / 10-20Nm. The ceramic center shaft is a ball bearing in a sealed bearing, made of black silicon nitride ceramic (Si3N4).