The milwaukee aviation snips have forged cutting heads for maximum durability and outstanding rust protection thanks to the hard chrome plated blades that reduce corrosion and prolong tool life the machined steel serrated jaws will cut up to 18ga crs cold rolled steel and 22ga ss stainless steel they have a flush bolt deisgn that wont hang up on material and they have a one handed locking mechanism for ease of use they are designed for use beyond the jobsite and are great for cutting aluminum vi