Quick facts
- Brand: OSTTE
- Price: USD 9.99
- Rating: 4.90 (15 reviews)
If you’re drilling stainless, hardened metal, or other difficult-to-cut materials, the OSTTE 1/2-inch cobalt drill bit is built for demanding work. It’s made from M35 cobalt high-speed steel (5% cobalt) to support heat resistance and edge strength when drilling at higher temperatures.
You can view the current price and full details on Amazon here.
A key upgrade is the Titanium Aluminum Nitride (TiAlN) nano-coating, designed to increase surface hardness and improve heat resistance for longer usable life versus uncoated or standard TiN-coated bits. The fully ground construction and 135° split-point tip help the bit self-center and reduce walking, so you can start holes with less pressure and better control.
The 1/2″ tri-flat reduced shank is designed to grip more securely in the chuck than a round shank, and the spiral flute design helps clear chips to reduce friction and heat buildup. It’s compatible with most standard drill drivers and drill presses, and it includes a plastic storage box for organization.
- Industrial-grade M35 cobalt high-speed steel (5% cobalt) for improved heat resistance and cutting durability
- TiAlN (Titanium Aluminum Nitride) coating for enhanced hardness and heat resistance
- 135° split point with fully ground construction for faster starts and reduced walking
- Non-slip 3-flat 1/2″ shank for stronger chuck grip; 6″ total length with 3″ flute/working length
- Designed for metals including stainless steel, hardened metal, aluminum, alloy steel, sheet metal, titanium, and cast iron; includes storage box
Backed by a 90-day satisfaction guarantee from the brand.
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