Featuring 100 PCS standard ABEC-1 608 2RS C3 deep groove(single row) bearings 8mm(ID)*22mm(OD)*7mm(W) Repalcing the worned ones on your skatebord scooter inline blade electric motors, wheels of bicycle & motorcycle,automobile, electric hand power tools, etc in many other rolling applications. Please do check dimensions/size or the precision grade if it fits in on your device.