Brad point drill bit with extra long brad point (ground three-edged), two main cutting edges, two taper taps, four grooves on the spiral. For drilling paling fences in stringers or handrails of staircases. Only limitedly recommended for hard wood. Better results with the three-edged than the four-edged brad point. As alternative item we offer the Bormax 1624. For hard wood we recommend the TCT-Bormax³ prima 1664 combined with a drill rig. Tool alloyed steel. 800 - 2500 rpm e.g. Ø 16 mm 2000 rpm in soft wood