Tweed arch bending plier is designed for torqueing and bending square or rectangular wires. Rectangular arch plier, tweed style forming plier for square or rectangular wires. The blades are designed to be parallel at .020″ (0.51 mm) opening. The working edges are carefully diamond honed tip prevent wire scoring. Mainly for bending or putting some torque to the edgewise wires. As the plier fully opened, both edges become parallel.