1. Top Quality material components highly durable: Tapered drill bit HSS M2, by far the most popular High-Speed Steel, for its high toughness, wear resistance, and good cutting edge retention; Drill, countersink and counterbore in 1 step; the countersink cutter doesn't clog up providing superior speed and clean finish 2. Adjustable 4-cutter counterbore cuts and clears chips quicker for fast, smooth countersinking; the countersink works effortlessly even after many uses; it makes clean and consistent tapered holes for screws without the need of a stop collar; counterbore size 5/16", plug size 5/16"
3. 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 counterbore attaches to flats on shank with 2 hex screws for a secure fit and can be adjusted for controlled pilot hole depth 4.Round shank compatible with the common electric drill chucks;
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.