61908-2RS Ceramic Hybrid C3 Ball Bearing Chrome Steel and Ceramic Balls One Bearing 6908-2RS Hybrid ceramic chrome steel sealed bearing with ZrO2 Ceramic Balls Electric motor quality, 6908-2RS Bearing is a popular size that could be used in many application that uses this size 40mm x 62mm x 12mm, bearing is closed with 2 Rubber Seals and double sealed, the bearing is one seal from each side to protect the bearing from dust or any possible contamination, also bearing is pre-lubricated with grease, 6908-2RS has industrial packaging.