This Knipex® Flat Nose Grozing Pliers grips, holds, and breaks glass. It has soft gripping jaws and smooth gripping surfaces to help prevent marring or scratching. It has a black atramentized coat on the steel to help prevent corrosion as part of the rust protection process. The pliers has a polished head and plastic-coated handles to help offer more comfort. It is made of special tool steel, forged, and oil-hardened for durability. Suitable for trimming glass edges when making leaded glass windows.