Description Bullett Hinge Boring Head Kit for the Bullett CWI-LBM13 Line Boring Machine is designed to fit Blum style hinges. This kit comes with a 35mm drill bit and two 8mm drill bits. Simply remove the 13 spindle drill head and replace with hinge boring head. Includes 3 Bits Part Number: CWI-LBM13-HBK
