National RW-508-BR Wheel Bearing Designed to meet or exceed OE quality, premium-quality bearings from National® are manufactured to exacting standards to deliver lasting performance and extended bearing life. COMPREHENSIVE COVERAGE -- Industry-leading coverage for domestic and import applications PREMIUM MATERIALS -- Precision manufactured using premium-grade steel for lasting performance and extended bearing life RIGOROUS TESTING?--?Comprehensive?testing throughout design and development processes by National engineers for quality you can count on? BUILT TO LAST -- Advanced heat treatment process for strength RELIABLE PERFORMANCE -- Element size and quantity are engineered to meet or exceed the load rating of OE bearings Package Dimensions: 3.25 x 1.25 x 3.25 inches Package Weight: 1.05 lb Package Quantity: 1 UPC: 724956032495 Bore (Inch): 1.531 IN Bore (mm): 38.892 MM Design: Single Row Radial Inner Race Bore (Inch): 1.531 IN Inner Race Bore (MM): 38.892 MM Inner Race Radius (Inch): 0.030 IN Inner Race Radius (MM): 0.762 MM Inner Race Width (Inch): 0.776 IN Inner Race Width (MM): 19.710 MM Outer Race Outside Diameter (Inch): 3.063 IN Outer Race Outside Diameter (MM): 77.788 MM Outer Race Radius (Inch): 0.040 IN Outer Race Radius (MM): 1.016 MM Outer Race Width (Inch): 0.776 IN Outer Race Width (MM): 19.710 MM Outside Diameter (mm): 77.775 MM Series: RWS Type: F-5 Width (Inch): 0.776 IN Width (mm): 19.710 MM Country of Origin: JP