These Rock! Punch holes in metal to make holes for adding chain, dangles, cold connections like rivets. Effortless to use, and makes wonderful, clean, square holes (You know, for putting round pegs in). Comes with a replacement cutter - it's sharp - you're not just using brute force here. I am totally loving these. Makes a 1.5 mm hole. Use with copper or silver or similar soft metal - will punch up to 24 gauge. Colour of handles may vary.