1.The Countersink Wood Drill Bit Kit pre-drills holes and countersinks even hardwood and aluminum, thereby reducing the risk of splitting the panel, and giving every screw nail or bolt a nice appearance as it appears flush with the furniture’s surface, and can be covered nicely with wooden plugs. 2.Tapered drill pointed tip with widened flutes for drilling fast, clean pilot holes and ensures tight fit for screws; tapered drill bit can be replaced with a replacement bit of the same type and size FTG 2329 for extended life;Quality built counter bore attaches to flats on shank with 2 hex screws for a secure fit and can be adjusted for controlled pilot hole depth
3.Universal 1/4 inch hex shank prevents slipping in standard chucks and is compatible with all 1/4 inch quick-change chucks, including impact drills; 4.Nice appearance: 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. 5. Uses: 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.