Reese 63830 Ball 2X1-1/4X2-3/4 8K Chr Bulk Solid steel hitch balls engineered to meet all safety requirements of VESC regulation V-5 Cold forged for superior strength When installing hitch balls, torque all 3/4" shank dia. (B) balls to 160 ft. lbs., 1" shank dia. (B) balls to 250 ft. lbs., and 1-1/4" shank dia. (B) balls to 450 ft. lbs.