Viking Drill and Tool 25502 Type 280-UBM 135 Degree Split Point Reduced Shank Silver & Deming Drill Bit, 15.0mm Metric Premium 1/2-inch Reduced Shank Silver and Deming 135-Degree Split Point 3-Flats on Shank 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 1/2-inch shank - 6-inch OAL