Ultra Bor Super Premium
Special Hi-Molybdenum tool steel
Substantially longer cutting life Nitro-carburized flute has increased Rockwell hardness & will out perform cobalt Cuts harder material
The flatter point takes a smaller chip. This allows drilling Into material with hardness over 30 on Rockwell scale. Stops drill walking
The split point design gives accurate starting without the use of a center point. Holds tighter holes
Split point design is self centering. This limits the normal oversize drilling characteristics.