RCINDUS 20Pcs 1/8-Inch Cobalt Drill Bits – M35 HSS for Steel, Stainless Steel, Cast Iron, Plastic & Wood

RCINDUS 1/8-Inch Cobalt Drill Bits — 20-Piece Set

This 20-piece set is built for durability and practical performance, housed in a sturdy plastic storage case that keeps every bit organized and within reach. The design blends toughness with precision so you can tackle metalwork, woodworking, and DIY tasks with confidence.

Why choose cobalt M35 HSS

Crafted from M35 high-speed steel with 5% cobalt, these bits resist wear and stay sharper longer when drilling through harder materials. The cobalt alloy contributes to a tougher structure compared with standard HSS, supporting longer tool life in demanding projects.

• 5% cobalt content boosts wear resistance
• Harder HSS variant for tougher metals
• Direct factory production ensures consistent quality

Precision you can trust

The 135-degree split-point helps the bit start centered, reducing wandering on hard surfaces and allowing cleaner entry from the first cut. Diameter accuracy is tightly controlled within -0.03 mm for dependable hole size across the set.

• 135-degree split-point for automatic centering
• Diameter tolerance within -0.03 mm

Wide range of applications

From hardened metal and stainless steel to cast iron, plastic, PVC board, and wood, these bits cover a broad spectrum of tasks. The 1/8 inch diameter is a versatile choice for pilot holes and precise drilling needs.

• Hardened metal, stainless steel, cast iron
• Plastic, PVC board, and wood
• Suitable for pilot holes and light fabrication

Quality you can feel

Real M35 material goes through more than a dozen processes, including full grinding and hardening, to deliver consistent edge quality and reliable performance. Each bit is designed to maintain hole size accuracy across repeated use.