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Your cart is empty.Drill America GSC Series Gold Stepped Point Cobalt Drill Bits start easier, drill faster, increase lifespan and reduce heat compared to standard drill bits. They can be used to enlarge existing holes or to create new, smoother holes in a wide range of materials such as acrylics, steel, metal, brass and other hard metals. These drills have a 135 degree split point tip and a 3 -flat shank to prevent spinning. Sizes 11/64" and smaller have a round shank.
DB
2025-08-21 16:39:06
I was drilling out the rivet holes to put rivnuts for the skid plate on my can-am utv. I went through a Milwaukee drill bit about every five holes. This drill bit was used to drill out about 25 holes and still counting. Will definitely buy again.
Troy Bengford- Custom Cut Decor
2025-07-28 17:58:42
We use a step drill to drill out plasma cut holes in 16ga metal. We kept breaking standard 3/16" bits when trying to drill out these holes. We used a regular step drill for a while but at $30 a pop and they didn't last very long. This bit works great and lasts a long time. When it wears out the replacements are much cheaper! Will be buying other sizes as well. Really like these bits.
Tu
2025-07-25 17:37:05
I was looking for a bit to penetrate through the toughest metal piece I've encountered. Nothing was working until I purchased this...with a little pressure it grinded right through! Very satisfied to finally finish the project thanks to this buy! Highly recommended.
Mrs. Green
2025-05-10 18:08:16
The bit was broken in the case upon delivery
Mike
2025-04-17 15:54:20
I have only tried the 1/4" bit in 1/8" aluminum. Did not use lubricant. Cut true to size and left such minute burr on both sides that I didn't feel the need to debur. Very impressive bit. I wonder if there is a thickness limitation especially with steel. One reviewer said it wasn't good for that although they didn't say what size bit they were using.
Daniel Sutton
2025-04-10 18:06:41
I have a Matco set at work and a few sizes of these at home. The Matco bits outperform these in every single way. I’ll eventually replace these with some Matco ones.
JP
2025-03-27 14:26:28
Just Buy one bit, drill a hole in any wood, and you will get a clean entry and exit hole. (A full set is on my Santa list.) NO TEAROUT even without a backer board. I'm a woodworker, haven't tried it on metal. Go to you tube, Izzy Swan to see a demo of these style bits. AWESOME.
Brenda
2025-01-25 14:46:53
The tip of this bit broke clean off right where it goes straight. I used it in a jig that I drill a 1/2" hole through 1/4" plate. It did drill the holes a little faster, but ended up breaking after around 100 holes. With a decent "normal" drill bit I get 1000 or so holes before the bit dulls, and I've never had one break.
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