6003-2RS ABEC-3 Ball Bearing Stainless Steel and Ceramic Balls 17mmx 35mmx 10mm One Bearing 6003-2RS bearing Stainless Steel Ceramic Balls ABEC-3 quality, this is a popular size that could be used in many application that uses this size 17mm x 35mm x10mm, each bearing has 2 Rubber Seals to protect the bearing from dust or any possible contamination, also bearing is pre-lubricated with grease.