Bormax® 2.0 WS prima with replaceable centering drill or guide arbor. The Bormax® 2.0 WS prima with interchangeable pilot drill or guide arbor, such as two offset fluted main cutting edges and the serrated pilot cutters with longitudinal grooves require significantly less feed force and minimize friction and the resulting heat development, the scope of delivery includes a suitable pilot drill and an Allen key, hexagonal shank for better power transmission, in conjunction with the pilot drills or guide arbors 1471 1619 ideally suited for angled drilling, clean drilling in all softwoods, European hardwood, chipboard and MDF