The Tow Ready Hitch Ball in Chrome - 2 in B X 3/4 in Sh X 1-9/16 in L - 3500 GTW(REPLACES: RS74975) is a solid steel hitch balls engineered to meet all safety requirements of VESC regulation V-5. Cold forged for superior strength. When installing hitch balls, torgue 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. | Cequent Tow Ready Hitch Ball