6x Countersink Drill Bit Set Quick Change Countersink with Adjustable Depth Stop
6Pcs Countersink Drill Bit Set. Applicable materials: for hardwood deep holes, for drilling screw holes in wood and sinking the screw head. 26x T7-T40 For Torx Impact Drill Driver Screwdriver Bits Set Tool 1/4" Hex Shank.