Pindia Countersink Drill Bits - 7Pcs

7 Countersink 4Fluted Bits with 7 Hex adjustable Depth Stop Collars Compatible with Screw Sizes 5 6 7 8 9 10 12 Bit sizes 18 964 532 1164 316 1364 732 inch Allen Wrench 332 diameter High quality HSS 4241 drill bits and NO 45 steel chamfer drill body for durability ADJUSTABLE Both the Countersink bits the collars have hex nuts for easy adjusting tightening accurate positioningMade of high speed heat treated Carbon Steel so the bits have sharp tips and are able to sustain through heat and pressure without breakingshattering and damaging the panel or beam you are building C Bit sizes are carved onto the drill bits for identification The drill bits drills pilot holes nicely and accurately with precision time and time again getting a precise cone shaped hole on each burr as a result you will get a nice smooth surface on any type of hard soft wood or aluminum Attach to any Power Bench or Hand drill driver When Woodworking or Building Molding enlarge and bevel the rim of a drilled hole so that a screw nail or bolt can be inserted flush with the surface you are working on Example Hinges the bits also wipe away any burr left from any application thereby improving the finish and removing hazardous edges Great for hinge Stair book case coffee table chair cabinet closet wall desk bed kitchen bedroom office studio dresser bench Countersink may also be used to remove burr left from a drillingtapping operation thereby improving the finish of the project removing any hazardous sharp edges