One And Three Eighth Inch Cobalt Drill Bit HSSCO High Speed Steel M35 SD Twist Drill Bit For Stainless Steel Half Inch Reduced Shank Six Inch Overall Length 135 Degree Split Point Pro Grade Workhorse

Six-Inch Cobalt Drill Bit, 1-3/8 in Dia, 1/2 in Shank
✔️ 6 in length, 1-3/8 in dia, 1/2 in reduced shank, M35 HSSCO

High-speed steel drill bit with cobalt alloy for metalworking, offering enhanced hardness and toughness. The 135-degree split point centers accurately and penetrates stainless steel, cast iron, zinc alloys, copper, and other tough metals. This bit is compatible with a wide range of toolholding systems and cutting directions.

✅ Diameter: 1-3/8 in (34.93 mm)
✅ Overall length: 6 in (152.4 mm); Shank: 1/2 in (12.7 mm)
✅ Material: M35 HSSCO cobalt high-speed steel with black and gold polished finish
✅ Point: 135-degree split point for accurate centering and fast penetration

💡 What is a cobalt HSS drill bit used for in metalworking and why choose it?

This handy bit is built for long life and reliable performance in tough metals.

- Ideal for stainless steel, cast iron, copper
- High wear resistance and heat tolerance
- Lubricious finish helps coolant stay near cutting edge
- Precise starting and centering with a 135-degree split point