Chicago-Latrobe 69881

The CHICAGO-LATROBE 69881 is a jobber-length drill bit set consisting of 15 high-speed steel bits with sizes ranging from 1/16 inch to 1/2 inch in fractional inch increments. Each drill bit includes a conventional 118-degree point angle and a two-flute spiral design with left-hand cutting direction. The bits are specified for drilling aluminum, cast iron, and steel, and are identified with ISO material application codes K, N, and P. The set includes a metal drill index case for storage. Key Features: - Contains 15 drill bits with sizes from 1/16" to 1/2". - Jobber-length overall sizes varying from 1 7/8 in to 6 in length. - Made of high-speed steel (HSS) with a bright, uncoated finish. - Two-flute spiral design with 21° to 34° helix angles and left-hand spiral direction. - Conventional point type with 118° point angle. - Straight shank of 1/6 in diameter for standard chuck compatibility. - Are manufactured to be consistent with ASME B94.11M-1993. - Includes metal index storage case. - Intended for machining aluminum, cast iron, and steel (as listed).