Draper Expert Breaker Bar Repair Kit, 1" Square Drive (3 Piece) | Bb-1This breaker bar repair kit provides everything needed to replace the head of a 1" Sq. Dr. breaker bar, helping to avoid the cost of purchasing a new one. The replacement head is constructed from chrome molybdenum steel and features a manganese phosphate coating for added corrosion protection. The kit includes the replacement head with ball retainer, a fixing hex screw and spring.