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This drill bit is made of M35 cobalt high-speed steel (5% cobalt content), offering significantly higher hardness and red hardness compared to ordinary HSS. Designed specifically for drilling holes in metal sheets – whether mild steel, stainless steel, copper, aluminum, cast iron, or alloy steel – it delivers accurate, fast, and effortless drilling.
1. Heat resistant, stays sharp
M35 maintains high hardness even at elevated temperatures, resisting softening during continuous drilling or when drilling thick metal plates. The cutting edge remains sharp, preventing jamming or tool failure due to overheating.
2. High wear resistance, longer life
The cobalt content greatly improves wear resistance. Even on tough, work-hardening materials like stainless steel, the drill cuts steadily, reducing downtime from frequent bit changes.
3. Smooth chip evacuation, break-resistant
Optimized flute design and point angle ensure smooth chip removal, reducing clogging. A thicker web provides high torsional strength, lowering the risk of bit breakage during drilling.
4. Precise holes, accurate dimensions
Precision-ground symmetrical cutting edges produce clean, burr-free holes with exact dimensions, minimizing secondary finishing work.
*Stainless steel, iron, aluminum, copper sheets.
*Machinery manufacturing, enclosure fabrication, sheet metal work, auto repair, home DIY.
Reliable quality, full size range (1mm-13mm, non-standard sizes available on request). Welcome to order!
