Set of LM48548/LM48510 Tapered Roller Bearings, 1-3/8" Inch Bore. Size: 1-3/8" ID x 2-9/16" OD x 0.72" Width. Single Row Tapered Wheel Bearings If you have questions about this or any of the many bearings we have in stock please contact us at info@qualitybearingsbeltsandchain.com