
I drill holes in aluminum to install solar panels. Trying to get a burr-free hole with a twist drill is impossible. But with a step drill, I get a clean, burr-free hole every time, and it also means I don't have to lug around a bunch of different sized bits. Just keep drilling until the desired size is reached.

Bit and socket set BOSCH Promoline (2.607.017.322), 26 pcs.
24 Review

π§± Bosch 2607017164 Piece Setter Masonry: Advanced Tools for Precision Masonry Work
20 Review

Cordless drill driver BOSCH GSR 120-LI (06019G8020/06019G8000)
54 Review

Tool set Stels Tool set, 1/2", 1/4", CrV, plastic case 94 pcs, Stels, 94 pcs, black
45 Review