Description of Drill America High Speed Machine Degrees
High-speed steel tools are good for most general purpose applications, offering a combination of hardness and toughness for wear resistance. Black oxide treatment adds lubricity and creates small pockets on the surface of the tool that act to hold coolant near the cutting edge. Round shanks allow use with a wide variety of toolholding systems. When run in a counterclockwise direction (right-hand cut) spiral fluted tools evacuate chips up and out of the cut to reduce clogging. Ideal for portable or machine drilling.
Based on my experience, this high-speed machine degree is an excellent buy for industrial drilling applications. The drill bit is durable, sharp and provides clean and precise drilling without breaking .Its rugged construction and efficient drilling performance make it suitable for both plastic and metal surfaces. The only drawback is that it requires periodic oiling to prevent rusting. Overall, It's an excellent investment for industrial drilling needs..
There were only 8 drill bits out of 12 in the box. 2 were actually in the package and 6 were scattered around the box. The box was ok so they didn't fall out or anything, they just didn't come from the start. I gave 2 stars instead of 1 as I need them for the length and they work. But no matter how I use them, by the end of my project I'll probably have all 12 through.