Y17-2RS 17x32x8 Rubber Sealed Bearing17 x 32 x 8 Sealed Ball Bearing One Ball Bearing 17mm x 32mm x 8mm Rubber Sealed Ball Bearing, bearing is made of Chrome Steel, each bearing has Double Rubber Seals to protect the bearing from any possible contamination, this is self lubricated bearing (bearing is already greased). Item: 17 x 32 x 8 Ball Bearing Type: Deep Groove Ball Bearing Closures: 2 Rubber Seals Size: 17mm x 32mm x 8mm Inner Diameter: 17mm Outer Diameter: 32mm Width: 8mm