Roller Bearing; 1-3/8" O.D. x 3" Long; 3/4" I.D. (for wheels with 3-1/4" hub length)
Outside diameter: 1-3/8"Length: 3"Bearing: Roller BrngBore: 3/4"Shipping Weight: 0.61 lbs.Usually Ships in: 24 hours (may be affected by quantity ordered)
The bearing fits inside the wheel center riding on the axle. Bearings vary from plain bore (no bearing) to precision ball bearings, with many alternatives affecting cost, ease-of-roll, initial roll-force, noise level and overall performance.