Chicago-Latrobe Heavy Duty Work Length Drill Bit Set, Series: 150ASP-TC, Imperial System of Measurement, Minimum Drill Size 1/16 in., Maximum Drill Size 1/2 in., Drill Point Angle 135 Degree, 29 Piece, Specifications: Right Hand Cutting, Spiral Flute, Split Point, Straight Shank, HSS, TiCN Coated