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0 out of 5
$229.94
SKU: B0BTTR9K6T
- Size Guide
- Reviews (9)

| Size | DHL Box | Internal Dimensions (cm) | Max Weight (kg) | FedEx Equivalent (approx.) |
|---|---|---|---|---|
| XS | Box 2 | 33.7 × 18.2 × 10 | ~1 | Small Box (8″×8″×8″) |
| S | Box 3 | 33.7 × 32.2 × 10 | ~2 | Medium Box (12″×12″×10″) |
| M | Box 4 | 33.7 × 32.2 × 18 | ~5 | Large Box (13″×13″×11″) |
| L | Box 5 | 33.7 × 33.2 × 34.5 | ~10 | FedEx 10kg Box (40.16 × 32.86 × 25.88) |
| XL | Box 6 | 41.7 × 35.9 × 36.9 | ~15 | FedEx Large (16″×16″×16″) |
| XXL | Box 7 / 8 | 48.1 × 40.4 × 38.9 or 54.1 × 44.4 × 40.9 | ~20–25 | FedEx Extra Large (42 × 42 × 47) |
9 reviews for Drill America 29 Piece Cobalt Stepped Point Drill Bit Set in Round Case w/Gold Oxide Finish for Drilling Acrylic, Steel, Hard Metals, Sizes 1/16″ to 1/2″ x 64ths, GSC Series ZMGSC29J-PC
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Amazon Customer –
You get what you pay for!!
Very clean, fast drilling in everything I have tried so far from wood to stainless steel. Expensive but extremely high quality and compact, convenient storage case. As a professional truck mechanic l highly recommend.
Scott G. –
Good for metal
These bits are good for going thru metal, maybe to good. They get such a good “bite” that I have snapped one bit already.
Michael C –
First bit broke immediately.
7/32nds bit broke on me the first time I used it. The step portion cracked off right away then the rest of the bit spun around with no bite. Had to fish out the chips with pliers then used a Bosch cobalt bit to finish the job.Will update the score up if the other bits hold up better
Hawaii –
Cut fast and clean
Drill bit works very good drill through metal fast
Lucas S. –
Good drills, but arrived with cracked plastic cover.
So far, the drills look awesome. The only reason I didn’t leave a 5 star review is that the plastic canister arrived with a cracked cover…hoping that Drill America sends a new one so I can give it a full 5-star review.
Michael Buckley –
Bits drill nicely
Bigger bits work great , small ones break easily but it could also be me
Adam Lee Kemp –
Works great for drilling through hardened steel, where others fail!
Exactly what I needed. Broke several other titanium bits before buying these. I used them to drill into Jeep Hardened Steel Roll Cage for Hi-Lift Mount. And these did the trick. Just go slow and use drilling oil, and youâre good to go. Also used these to drill through four other steel plates up to 1/2â thick. And cut like butter. Highly recommend.
Scott Francis –
Unique & well worth the money.
Best drill bits in the world !! Have used them where standard bits wouldnât make a dent !! Not necessary to prick punch when drilling hard metal.
Multi Service RSB –
boitier de meche endommage couvert casse