Suppose the thin sheet steel 0.8 up to 2mm and range off size holes tried a few cheapish drill but the best was the old b&d but it don't sound so good anymore lol
I had one of the old ally wolf drills that would rip your arm out of the socket if you kept hold of it then hit you round the head with the soggy enda 700w makita with a 2 speed gearbox i also have a 1000w metabo drill with a clutch otherwise its a broken wrist without