Chicago-Latrobe 69897

The CHICAGO-LATROBE 69897 is a jobber length drill bit set consisting of 20 pieces made from high speed steel with a general-purpose grade. The bits have a conventional point and a right-hand spiral direction; they are suitable for use on aluminum, cast iron, and steel when used with appropriate drilling equipment and operating parameters. This set includes sizes from #80 to #61 with varying overall lengths from 3/4 inch up to 1 5/8 inches and comes housed in a metal drill index for organization and storage. Key Features: - Drill bit material: High speed steel (general-purpose grade) - Drill bit size range: #80 (smallest) to #61 (largest) - Number of bits: 20 pieces with 2-flute spiral design - Length: Jobber length with overall lengths from 3/4" to 1 5/8" - Point type: Conventional 118-degree point angle - Shank type: Straight with diameter of 27/2000 inches - Spiral direction: Right hand with helix angles between 21° and 34° - Primary material applications: Aluminum, cast iron, and steel (ISO K, N, P) - Measurement system: Wire gauge sizing - Standard: ASME B94.11M-1993 - Includes a metal drill bit index case