6903ZZ 17x30x7 Shielded Deep Groove Bearing Pack of 106903ZZ Shielded Ball Bearings 17mm x 30mm x 7mm 6903ZZ Shielded Ball Bearings, the inner diameter is 17mm, outer diameter is 30mm and the width is 7mm, each bearing has 2 metal shields to protect the bearing from dust or any possible contamination, also bearings are pre lubricated with grease, Bearings are made of Chrome Steel, Bearings are packed 10 bearings in one plastic tube. Item: 6903ZZ Ball Bearings Type: Deep Groove Ball Bearings Dimensions: