Magnum Super Premium - 135 Degree Split Point - Sepcial Hi-Moly tool steel. 135 degree split point for fast penetration and accurate starting without a center punch. Precision ground point, flutes, body, clearance and drill diameter for the ultimate in accuracy and performance. Body and clearance are gold surface treated for max lubricity. Heat treated at 2185 F and then nitro-caburize finished at 950 F. - 1/2 1/2" Mechanics Length Molybdenum Norseman Drill Bit (12MB) (87200)