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

Best drill bit I’ve ever used and am not getting paid to say anything there awesome well worth the money

Is exactly as expected, worked great did the job 12 other bits couldn't!! I have a shop so I get many tools. These held up to the hype. Cut through engine block exhaust bolt. Bolt broken in block.

I drilled over 50 holes into a 1" steel tube. I used a drill press and lubricated the bit with cutting oil before each hole. Bit worked great. No slipping on the rounded surface. Cut the steel with little pressure. Easy to hit my mark.

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

Nice bits

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.

Watched my mechanic use these. I was so IMPRESSED I bought a set. This is straight up the real deal. I watched him center punch some 1/4 steel plate. Used the 1/4 bit and drilled through it in under 3 seconds. 4 holes, 3 seconds each hole. Then put in the 3/8 bit. Went through each hole enlarging in under 2 seconds!!! Then enlarged with 1/2 bit. Went through in under 3 seconds! Are you kidding me...1/4 plate steel. This is for real. He was using a snap-on 1/2 air drill, and I admit that is one wicked, nasty, high torque drill...he said a normal drill would stall...but these bits are nasty. I'll send a video soon.

good product

boitier de meche endommage couvert casse