Shielded Bearing R1212ZZ 1/2"x3/4"x5/32" inchR1212ZZ Shielded Ball Bearings 1 2" x 3 4" x 5 32" inc R1212ZZ Shielded Ball Bearings, the inner diameter is 1 2", outer diameter is 3 4" and the width is 5 32", this is a popular size that could be used in many applications, Bearings are made of Chrome Steel each bearing has 2 metal shields to protect the bearing from dust or any possible contamination, also bearings are pre lubricated with grease. Item: R1212ZZ Ball Bearings Type: Deep Groove Ball