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The EAGLE CUTTING TOOL TAC40-215-I is a high-speed steel (HSS) jobber-length drill bit sized to Letter O. Jobber-length drills are the standard general-purpose format, offering a balanced reach-to-rigidity ratio suited for drilling through metal, wood, and plastics. The HSS construction provides the hardness and heat resistance required for production drilling in shop and field environments. At 0.15 pounds, this is a lightweight individual bit intended for use in standard drill chucks and CNC-compatible tool holders. Machinists, pipefitters, electricians, and general tradespeople keep letter-series bits on hand for hole sizing, clearance drilling, and tap preparation.
Letter O drill bits are commonly used where fractional sizes do not align precisely with a required hole diameter. Typical applications include clearance holes for fasteners, pilot holes ahead of tapping operations, and sizing holes in sheet metal, structural steel, conduit bodies, and pipe flanges. This import-grade HSS bit suits high-volume or consumable-use scenarios where cost-per-hole is a primary consideration over extended tool life.
Designed as a standard jobber-length drill bit compatible with 3-jaw drill chucks and drill press spindles sized to accept the Letter O shank diameter in typical shop, field, and production drilling applications.
Secure the bit fully in the chuck before operation and verify chuck key is removed before powering the drill. Use appropriate cutting fluid or lubricant when drilling ferrous metals to extend bit life and reduce heat buildup. Wear ANSI-rated eye protection during all drilling operations. Dispose of or recondition worn bits rather than forcing dull tooling, which increases breakage risk and reduces hole quality.
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