6403-2RS Sealed Ball Bearing 17mm x 62mm x 17mm One Bearing 6403-2RS Sealed Ball Bearing, the inner diameter is 17mm, the outer diameter is 62mm and the width is 17mm, 6403-2RS is a popular size that could be used in many applications, 6403-2RS Bearing is made of Chrome Steel,bearing has 2 Rubber Seals to protect the bearing from dust or any possible contamination,6403-2RS bearing is pre-lubricated with grease.