Bearing
Size 18*30*7mm
Featue high speed
Balls Material Si3N4 ceramic
Ring chrome steel
Cage Nylon Cage
Material : Bearing Steel
Model Number : 18307-2RS
Bearing Material : Bearing steel
Bearing type : Hybrid ceramic ball bearing
Bearing Sizes : 18x30x7 mm
external diameter : 30mm
width : 7 mm
Bearing Characteristics : silent operation and high speed
Application : Bicycle Bottom Brackets