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. Product Features:BUILT TO LAST -- Advanced heat treatment process for strengthPREMIUM MATERIALS -- Precision manufactured using premium-grade steel for lasting performance and extended bearing lifeRELIABLE PERFORMANCE -- Element size and quantity are engineered to meet or exceed the load rating of OE bearingsCOMPREHENSIVE COVERAGE -- Industry-leading coverage for domestic and import applicationsRIGOROUS TESTING--Comprehensivetesting throughout design and development processes by National engineers for quality you can count onHardward not included,Mounting Hole Quantity: 2Mounting Hole Center To Center: 6.620 InBearing/Cone Inside Diameter: 1.378 In