Long life, high quality aluminium oxide and silicon carbide wheel accurately sharpens 3-13mm diameter, HSS (including titanium-coated and cobalt), masonry (regular and hammer), SDS plus, centre point wood (brad point) and flat wood bits. Grinding jig accurately positions each type of drill bit over the wheels to give correct tip and relief angles. Also re-edges and resharpens small tools such as scribers, bradawls, punches, cold chisels, TCT laminate trimmers or tile cutters. Powered by any domestic electric drill.