Yoke Bullet Style Angular Contact Bearing SwivelManufactured using the highest grade of material available. Designed with a safety factor of 5: 1. Available in sizes from 3 4 Tons to 35 Tons. Available for wire lines 1 4" to 1 1 2". Zinc plated for corrosion resistance and longer life. Manufactured with grease fittings for superior performance. Designed for low starting torque and high rotation speed. All Swivels parts are 100% magnaflux crack detected. 20,000 cycle fatigue rate to 1. 5 times