10-Pack R12ZZ Bearings 3/4" x 1-5/8" x 7/16"R12ZZ Shielded Ball Bearings Lot of 10 Deep Groove, Chrome Steel 3 4" x 1 5 8" x 7 16" Inch This 10 pack of R12ZZ deep groove ball bearings is designed for industrial, mechanical, and commercial applications. Each bearing features double metal shields to block dust and debris, and comes pre lubricated with grease for smooth, long term use. Ideal for motors, pulleys, and assemblies where inch size precision is required. Inner diameter: 3 4" inch Outer