This new improvement the old “Imp” 3-in-1 bender (368FH), features Imperial s patented Roto-Lok quick-action indexing lever. It s a two-stage handle that automatically repositions itself midway through bend to allow easy fabrication of bends up to 180° with reduced effort, better control and no crossing of handles Up to 180 degree bends in sizes: 3/16″, 1/4″, 5/16″, and 3/8″ O.D. tubing. Bend radii are: 7/16″, 9/16″, 11/16″, and 15/16″ respectively. Works with copper, aluminum, brass, thin wall steel, and thin wall stainless. Calibrated markings for making accurate left-hand, right-hand offset bends. Compact design for working in tight spaces. Cushion grips for comfort and stability.