Description: Suitable for hardness lower material, such as wood For use with Cordless drills , regular drills, drill presses, or low rpm rotary tools. Great for making countersink holes for counter sunken screw heads as well as counterbored holes for plugs. Shank: round handle Material:HSS Surface treatment: titanium Quantiy: 1 Set 3Pieces (3/8?1/2?3/4) Package Includes: 3Pieces Countersink bits
