Forstner bits (as per DIN 7483-G) made of high carbon steel have precision ground finish. A precise drill bit with two blades and a side cutting edge with a short centering point. For drilling dimensionally accurate, tear-free, flat bottomed holes in solid wood and veneered wooden boards, chipboard and plywood. Ideal for door locks, morticing, electrician and plumbing work. Suitable for all kinds of drilling machines with with a 10 mm chuck. No other type of a drill bit can equal its quality of cuts around the edge and side of the hole.