CHICAGO-LATROBE 69881 Left-Handed Helix Jobber Length Drill Set Chicago-Latrobe

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).

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