Bormax HM prima with replaceable center point or pilot drill, the two carbide main cutting edges with ground pilot cutters ensure maximum service life even in hard+coated materials, the scope of delivery includes a matching center point, a pilot drill ø 4 mm and an Allen key, hexagonal shank for better power transmission, clean drilling at many angles in all wood materials such as: European and exotic hardwood (including bongossi), MDF, coated and uncoated chipboard, as well as many plastics such as acrylic plexiglass, Corian®, GRP, HPL coating, polycarbonate, PVC and Trespa®, ideally suited for deep-hole drilling in conjunction with the 1639 extensions