HD SWITCH: Engineered Performance HIGH PERFORMANCE: Precision Machined A2 Tool Steel - High Performance Bearings That Last DESIGNED FOR: Radial & Axial Load Applications BEARING SET: Bearing & Race (Cup/Cone) Direct Replacement For Timken Set6 Buy with Confidence. Our bearings are Engineered to provide Maximum Performance for the Most Demanding Applications. Each Precision Machined Bearing is made using the Highest Quality Steel to Provide Superiour Accuracy and Reduced Friction. By minimizing the amount of friction we are able to Increase Bearing Life, and more importantly, Decrease Downtime. Better Quality, Longer Life, Less Downtime.