IRWIN INDUSTRIAL TOOL CO - ACH 30508 1/8 Cobalt Drill Bit

IRWIN INDUSTRIAL TOOL CO - ACH 30508 1/8 Cobalt Drill Bit

Designed for mechanics and automotive professionals, the IRWIN INDUSTRIAL TOOL CO - ACH 30508 is a 1/8 Cobalt Alloy Steel drill bit engineered for demanding metalworking tasks. The 135° point and left-handed orientation provide controlled cutting and effective chip evacuation when working on hardened steels and metal assemblies commonly found in automotive repair and maintenance.

Drills Compatibility And Performance

This 1/8 Cobalt drill bit is compatible with a wide range of drills, from corded bench drills to cordless hammer and impact-ready drivers when used with proper chucks and speeds. The cobalt alloy composition enhances heat resistance and edge retention, helping maintain sharpness under higher RPM and through repeated contact with metal fasteners, brackets, and housings. Mechanics will appreciate the 135° geometry for its reduced walking and improved centering on punch marks and pilot holes.

Professional Power Tools For Automotive Use

As part of a professional power tools toolkit, the 30508 model is a precision option for mechanics who require consistent results on automotive components. The left-handed design can aid in extracting broken screws or bolts by engaging the fastener as the bit turns counterclockwise. Its robust alloy construction supports heavy-duty automotive power tools environments and frequent use in shop settings.

Durability And Application Notes

Manufactured from cobalt alloy steel and ground to a 135° point, this drill bit balances toughness and cutting performance. It is well suited for drilling into stainless steel, alloy steels, and other hard materials encountered in repair and fabrication work. For best results, use proper speeds, cooling, and steady feed pressure to extend life and maintain precision. Store the bit in a protective case or organizer to prevent edge damage between jobs.

Whether replacing worn bits in a professional kit or specifying tooling for automotive repair, the IRWIN 30508 delivers the durability and geometry expected by technicians focused on metalwork accuracy and reliability.

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