Viking Drill and Tool 87710 Type 260-UB 135 Degree Split Point Magnum Super Premium Screw Machine Length Drill Bit (12 Pack), 1/16" Premium Screw Machine NAS 907C 135-Degree Split Point 135-Degree split point for accurate centering and fast penetration Precision ground point, flutes, body, clearance and drill diameter for ultimate accuracy and performance Special Hi-Molybdenum tool steel NAS 907C Screw Machine Length