DKIBBITH 7 Pack Countersink Drill Bits Set Wood Drill Countersink Counterbore 3in1 Three 82Degree Chamfer Cutters M2 Counterbore Cutting Depth Adjustable with 2 Allen Wrenches and 14 Hex Shank

3 in 1 Combination Our units combine Drill Bit Countersink Counterbore in one tool with which you can get perfect hole for 4 6 8 10 12 14 or 16 screws in one step 82 Degrees Countersink 38 Counterbore Bits You can either have the head of the screw fit flush with the surface or below the surface then conceal it with matching wood plugs ideal tool for dowel buttons or plugs Adjustable Cutting Depth the sharp M2 Pilot Hole Drill Bit is detachable so you can adjust the drill depth according to the length of your screw then tighten it with the hex key included to the Countersink Counterbore sleeve Wide Range Built with 14 hex shank to fit most quickchange chuck machines or power drills Package Includes 7 pieces of M2 Screw DrillCountersinkCounterbore bits in sizes 564 332 764 18 964 532 and 316 Multi Purposes The drill bits perform well in softwood or hardwood and serve the needs of most woodworkers for softwood we highly recommend to use a drill bit one size smaller than the screw size.