Dimension / in mm. Ball Size Ultimate Strength / lb kg. A B D 57 38 3/4″ ANSI Type B, Type J 30,000 13,600 59 38 7/8″ ANSI Type K 40,000 18,200 108 38 3/4″ ANSI Type B, Type J 30,000 13,600 106 38 7/8″ ANSI Type K 40,000 18,200 PREV NEXT