6409-2RS Sealed Ball Bearing 45mm x 120mm x 29mm One Bearing 6409-2RS Sealed Ball Bearing, the inner diameter is 45mm, the outer diameter is 120mm and the width is 29mm, 6409-2RS is a popular size that could be used in many applications, 6409-2RS Bearing is made of Chrome Steel,bearing has 2 Rubber Seals to protect the bearing from dust or any possible contamination,6409-2RS bearing is pre-lubricated with grease.