Drilled 72 holes in a 1/4 inch angle iron and cut the 72nd hole almost as easily as the 1st hole. I confess that I used a lot of coolant in the process. and did all drills at 1-2 second intervals to reduce heat build-up, however I had less success with the more expensive drills.
π§± Bosch 2607017164 Piece Setter Masonry: Advanced Tools for Precision Masonry Work
20 Review
Bit and socket set BOSCH Promoline (2.607.017.322), 26 pcs.
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Tool set Stels Tool set, 1/2", 1/4", CrV, plastic case 94 pcs, Stels, 94 pcs, black
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Impact screwdriver Makita TD0101F, 230 W
31 Review