Erie Tools 12" Bench Model Slip Roll Forms Cylinders, Reverse Curves & Radius Bends Of Sheet Metal with 20 Gauge Capacity 12" forming width Max 22 gauge max capacity in mild steel 3 wire-grooves (5/32", 15/64" and 5/16" ) Minimum Roll Diameter: 1" Mounts easily to a bench Precision adjusting screws for upper and lower front rolls Welded Steel Frame Dimensions: 19" x 11" x 13 7/8"