?High Quality Material?The countersink drill bit is made of high carbon steel material with titanium nitrate coating. High hardness, durable and offer superior cutting power.
?Unique Design?Three-Pointed design can quickly and accurately drill a smooth hole. Five-edged chamfer design will fast discharge chips from the hole on both sides automatically.
?User-friendly Design?Use the hex key to remove five-bevel chamfer or adjust counter sleeve depth and drilling depth for screws of various lengths.
?Extremely Versatile?- The Countersink Drill Bit Set is includes 1 piece of hex key and 7 pieces of countersink drill bit in 7 different sizes to satisfy all you demand.
?Multipurpose?Perfect for Granite, tile, glass, quartize, ceramic, vitrified brick etc. Suitable for bench drill, hand drill and conventional electric drill.