The Marrette 833 is an outstanding wire connector with an ergonomic wing design that can take a wide range of wire combinations from 22-8 AWG. Ergonomic wing design gives you a comfortable grip and more torque than the competition The ergonomic shape reduces finger fatigue from repetitive installations The ergonomic wing shape allows excellent torque grip for your fingers as well as the option to use a standard 1 /2 in or 13 mm hex driver to help twist the wire connector Deep, wide throat ensures full insulation coverage The square wire spring construction and funnel design gives a positive pressure conductor grip for solid or stranded wires