Bordo Jobber Drill Set HSS Cobalt 1 - 13mm 25 pieces 2011-M31 13mm 25 Pce HSS Cobalt Drill Set ABS Case Bordo Metric Cobalt Tough HSS Co5 Twist Drills. DIN338 135 Split Point (crankshaft point). Split point is self centering and the short distance from the drill axis to the outer corners results in faster penetration, reducing the need for end thrust. The 135 point should be used to cut harder steel materials especially in deep hole applications. In these situations it will produce thicker chips minimising