6 Flute Countersink Drill Bit 90 Degree Point Angle Chamfer Cutting Woodworking Opener Countersink Tool Power Tool accessories - Great for sinking 90 Degree holes in wood and soft metals in preperation of countersunk screws. - Heat treatment carbon steel blades ensure a good tool life. -Cut quickly and easily on wood, soft metal, rubber, plastic and other machinable materials. -Perfectly centered holes each time the screw heads are properly seated. 5. Function: mostly used for workpiece removal burr and wood board plastic plate opening Features: 1 It is often used to remove burrs from workpieces and to open holes in wood plastic panels, often appearing in drilling tool sets. 2 You can drill a hole in many plates, such as wood or plastic, to align the nail with the table top and not spit it out. 3 High quality material, safe and reliable, can be used safely for a long time. 100% New And High Quality Material: Carbon Steel Color: Steel Color Size: Length: 3.6cm, Diameter: 1.2cm, Error about 1cm Conversion: 1inch=2.54cm, 1cm=0.393inches Package: 1pc Warm Tip: 1. Please be reminded that due lighting effects, monitor's brightness/contrast settings etc, there could be some slight differences in the colour tone of the website's photo and the actual item. 2. Item Measure by hand, it could be 1cm different,your kind understanding will be much appreciated.