The grinding attachment is bolted or screwed onto the bench adjacent to the side face of the grinding wheel and provides a convenient way of re-sharpening drill points to the correct angle. Complete with instructions for set-up and use. Full range of point angles can be ground with correct angle and clearance for efficient cutting. Capacity 3mm(1/8") to 19mm(3/4") bit diameter and minimum length of 75mm(3"). Wear eye protection.