Amana tool AMS-621 3-Pc Carbide Tipped Countersink with Adjustable Depth Stop and No-Thrust, No Marring Bal Bearing Set

Used to countersink holes for the heads of screws in woods, plastic and non-ferrous materials. The 2-flute integral design ensures uniform and concentric results each and every time. Carbide tips provide chip free hole edges and lasts much longer than steel countersinks. Available in a wide variety of sizes, complete with the HSS M2 fully ground drill bit. Excellent for Drilling: Natural Woods Man-Made Boards MDF Chipboard Plywood Aluminum/Non-Ferrous Aluminum Composite Materials (ACM) Composite Decking Materials WARNING!: For optimal results and extended tool life use lubricant or air cooling. Ensure the material is fixed and drill is stable while drilling.