The P&N quick bit TCT replacement drill bit is a drill screw pilot hole and countersink in one action, tungsten carbide tipped (TCT) countersink with multi-purpose drill bit has 1/8 inch size and 1/4 inch hex shank suits quick change adaptors.
TCT countersink for use in cement sheet, blue board, timber, plastic and abrasive material Removable drill for easy replacement
