IRWIN INDUSTRIAL TOOL CO - ACH 30519 19/64 Cobalt Drill Bit
This IRWIN INDUSTRIAL TOOL CO - ACH 30519 19/64 Cobalt Drill Bit is engineered for mechanics and demanding metalwork where a left-handed cutting action is required. Made from cobalt alloy steel with a 135 degree point, this bit delivers consistent performance on hardened materials while offering the left-hand spiral geometry that assists in removal tasks and specialized applications common in automotive and mechanical repair.
Drills
Designed to be used with corded and cordless drills, this 19/64 size provides a precise hole diameter for fittings, fasteners, and assembly work. The 135 degree point helps center the bit and reduces walking on tough surfaces, while the cobalt alloy construction improves heat resistance and durability compared with standard high-speed steels. The left-handed configuration makes it useful for extraction or for machines that require reverse cutting direction.
Professional Power Tools
As part of a professional power tools toolkit, the 30519 drill bit complements other drill accessories and supports heavy-duty automotive power tools applications. It pairs well with power drills used in engine work, chassis repairs, and fabrication tasks where repeatable hole quality is essential. The bit is sized for common mechanic requirements and supports workflow efficiency in shop environments.
Careful manufacturing ensures uniform fluting and geometry for better chip evacuation and smoother cutting action. Use recommended drill speeds and appropriate lubrication on hardened steels to extend tool life and maintain cutting performance. This bit is an ideal replacement or add-on for technicians seeking a reliable left-hand cobalt solution.
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