traditional synthetic drill bit with center point, 2 main cutting edges and 2 pre-cutters, clean, tear-free holes in softwood, also suitable for European hardwood and veneered panels, particularly easy to resharpen thanks to straight pre-cutters, synthetic drill bits are only suitable for stationary use, in conjunction with the 1639 extensions, ideally suited for deep-hole drilling, for freehand use we recommend the fast Forstner bit Bormax® WS series 1622 or the carbide Bormax series 1663