These professional quality sheet metal shears cut up to 18 gauge thick. These air metal shears make ultra smooth cuts straight or curved. features: Free speed of 2100 RPM, 1.2 mm capacity for mild steel, 1.6mm capacity for aluminum, Width of cut: 7/32", Average air consumption: 4 CFM, Recommended Air Pressure: 90 psi, For use with 3/8"-Hose, Made in Taiwan