If you drill stainless steel or other tough metals, having the right bit set can save time and frustration. This STROTON metric set uses M42 8% cobalt steel and is built to handle demanding metalworking tasks with better heat and wear resistance than general-purpose bits.
You can view the current price and full details on Amazon here.
The set covers 19 sizes from 1mm to 10mm in 0.5mm increments, making it easier to match common metric hardware and hole requirements without skipping sizes. Each bit features a 135° split point to help start holes more accurately and reduce walking, plus a straight shank for broad compatibility with standard chucks.
Designed with a 3-step cutting concept for drilling through stainless steel, hard metals, aluminum, and plastic, these bits are aimed at cleaner cutting and longer tool life—especially when you’re making repeated holes.
M42 8% cobalt steel construction with stated 68–70 HRC for heat, wear, and chip resistance
19-piece metric range: 1mm–10mm in 0.5mm increments
135° split point for easier starts and reduced bit wandering
Spiral flute twist design with straight shank
Intended for stainless steel, hard metals, aluminum, and plastic
