The Steck Manufacturing Al Skin Zipper works on any 1mm aluminum skin and 1.5mm door shell. The air-hammer-driven tool skins doors in approximately 15 minutes using a self-lubricating, reinforced nylon head, which crimps regular or adhesive-bonded skins. According to the company, the Al Skin Zipper crimps the edge tightly for a professional rope hem finish with no damage to the skin in a two-step process after removing the self-piercing rivets.