The P&N quick bits drill countersinks TCT cut smart 2-in-1 decking bit has been designed for perfect controlled drilling and countersinking with the one tool has 3/16 inch size, 14.8 mm countersink size and 1/4 inch hex shank suits quick change adaptors a
14g screw gauge Non marking, stop collar prevents tool from marking the work piece TCT countersink for use in cement sheet, blue board, timber, plastic and abrasive materials No jamming