Forstner drill bits din 7483 g for accurate drilling of fitting holes a precision drill bit with 2 blades and side cutters with short centre tip this drill bit excels due to its high cut quality in the drilled hole tear free drilled hole edges in hard and soft wood and veneered wood with solid wooden core with centring tip for accurate pilot drilling cutter hardness min 50 hrc tempered steel manufactured to own factory standards reduced straight shank max 10 mm diameter