R1-4ZZ 5/64x1/4x9/64 inch Shielded Miniature Bearings Pack of 10Ball Bearings 5 64" x 1 4" x 9 64" Lot of 10 Bearings High Quality 10 inch size Ball Bearings, the inner diameter is 5 64", outer diameter is 1 4" and the width is 9 64", 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. Dimensions: 5 64inch x 1 4inch x 9 64inch