683/672 Tapered Roller Bearing 3-3/4" x 6-5/8" x 1-5/8"683 672 Tapered Roller Bearing Set 3 3 4" Bore x 6 5 8" OD x 1 5 8" Wide Cone & Cup Combo This tapered roller bearing set includes both cone (683) and cup (672), built to handle heavy radial and one directional axial loads. Made from high quality 52100 chrome steel, it's commonly used in truck hubs, gearboxes, trailers, and other high load, rotating machinery. Cone: 683 Cup: 672 Bore (ID): 3 3 4" inch Cup outer diameter (OD): 6 5 8" inch Cone width