Description of Chicago Latrobe High Speed Extra Long Notched
Extra-long length drill bit reaches farther and drills deeper than a jobber or long length drill bit. High-speed steel (HSS) provides hardness for wear resistance. Black oxide finish reduces wear while promoting chip and coolant flow on ferrous materials. Self-centering 118-degree notched point penetrates material without a pilot hole more easily than a conventional point, and maintains a sharp cutting edge. Extra thick web provides increased strength and rigidity compared to standard drill bits. Made in the USA.
After trying industrial and scientific drill bits for cutting tools, I had high hopes for this one. Unfortunately it did not DELIVER... The bit took too long to drill holes and had a tendency to become stuck in harder materials. The only positive aspect was the extra-long length, which was helpful for reaching deeper spaces. Overall, i would not recommend this product..
Pros
Extra long design allows for deeper drilling and versatility
Cons
No built-in chip clearing mechanisms, making it prone to clogging and breakage when drilling through tougher materials
This is an amazing drill bit made in the USA. I bought it as "last" for $8! 90% discount! To turn the tip 1" on his lathe to 1/2" to fit my low torque and high torque drill bit. I drilled holes in several 6" laminated wood joists from 2x8 glued and screwed together. I used to mess up 2 drill bits when hitting hardened screws. This bit went right through the screws without missing! Drilled 12 holes in 2 joists. Great drill bit !