Cold-forged for superior strength When installing torque all 3/4 shank balls to 160 ft lb all 1 to 250 ft lb and all 1-1/4 to 450 ft lb Balls with longer shanks are designed for use with step bumpers Engineered to meet all safety requirements of VESC regulation V-5. 2000-LB CAPACITY 1-7/8 Ball Diameter - Carded Shank Dia x Lgth=3/4 x 1-1/2