Air scissors types - The QH-15 and QH-12 Air scissors are ideal for trimming, outlining and shearing of various sheet such as most of the plastics, all kinds of aluminum, tin and steel. The heavy-duty cutting blades make clean cut in cold rolled steel up to 24-gauge. The QH-15 air scissors is ideal for body shops, sheet metal shops, and machine shops. The QH-12 air scissors is ideal for contour snip. The heavy-duty blades make quick and clean snip. The scissors is ideal for arranging flower shops, body shops and machine shops.