10-Pack R4AZZ Bearings 1/4" ID x 3/4" OD x 9/32" Width - Shielded10 Pack R4AZZ Shielded Ball Bearings Chrome Steel 1 4" ID x 3 4" OD x 9 32" Wide Double Metal Shields This 10 pack of R4AZZ deep groove ball bearings is built for durability and performance in compact applications. Made from high strength chrome steel and fitted with double metal shields (ZZ), these bearings protect against dust and debris while ensuring smooth, low friction rotation. Inner diameter (ID): 1 4" inch Outer diameter (OD): 3 4" inch