CHICAGO-LATROBE 57853 60PC 135 Deg Heavy-Duty Cobalt Jobber Drill Set

The CHICAGO-LATROBE 57853 is a jobber-length drill bit set with 60 cobalt drill bits, size range #60 to #1. The drill bits feature a split point tip and a right-hand spiral direction. Included is a metal drill index for organized storage and selection of bits. This set is labeled as NAS 907 Type J (Type J) and is intended for use in applications consistent with that specification.

Key Features:

• - Material: Cobalt drill bits.
• - Drill bit sizes: #60 through #1; 60 pieces included.
• - Jobber-length design; overall length range 1 5/8 in to 3 7/8 in.
• - Shank: Straight type with a diameter of 1/25 inch.
• - Point type: Split point; 135-degree angle.
• - Flute design: 2-flute spiral with helix angles between 21 and 34 degrees and right-hand cutting direction.
• - Primary material application codes: H, K, M, N, P, S (per ISO codes).
• - Includes a metal drill index case for bit organization and protection.

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