Certain thickness

Drills designed to work with wood have a steep groove angle and a rather sharp angle of sharpening.

Depending on the type of work, the processing of the material, it is necessary to select the drills of a certain thickness, diameter and length. To drill holes for self -tapping screws, screws or bolts, you will need a drill to a diameter less. Not only the quality of the processed material, but its service life, depends on how correctly selected a spiral drill for a particular work.