This version of the 1.5mm hole punch plier has a 1" throat and includes an adjustable stop to prevent marring. It will punch soft metal as thick as 20 gauge. With ergonomic handles and tempered replaceable pin, these pliers will save you time and money. The pliers are made of thick carbon steel and come with an extra replaceable pin. Length 6-1/4". Use Cut Lube with your punches it makes it so much easier to use and it extends their life.