... steelCage MaterialBrass,Ductile Iron,Solid steel,Steel,Carbon steel,Copper,Nylon,etc.ID Size4 ... and Commerce Product1.Ball BearingsDeep Groove Ball Bearings,Angular Contact Ball Bearings,Thrust Ball Bearings,Self-aligning Ball Bearings,Ceramic Ball Bearings,Other Ball ... Bearings BrandSKF bearing, FAG bearing, KOYO bearing, NSK bearing, NTN bearing, INA bearing, TIMKEN bearing, ZWZ bearing, HRB ...