Chicago-Latrobe 45640

The CHICAGO-LATROBE 45640 is a jobber length drill bit set composed of 29 high speed steel bits intended for drilling materials classified under ISO codes K and P (cast iron and steel). The bits feature split point tips with a 135-degree point angle to help ensure accurate starts. This set includes drill sizes from 1/16 inch up to 1/2 inch in fractional inch increments and comes housed in a metal drill index case for organized storage. Key Features: - Drill bits made from high speed steel (HSS). - Includes 29 pieces with sizes ranging from 1/16" to 1/2". - Jobber-length design with overall lengths from 1 7/8" to 6". - Split point drill tips with a 135° angle for split point centering. - Two-flute spiral design with right-hand cutting direction. - Straight shank type with a diameter of 1/6". - Measurement system based on fractional inch sizing. - Complies with NAS 907 Type B standard. - Includes a metal index case for bit organization and storage.