Stanley Proto JSCV-20S Proto 20-Piece Black Chrome Reversible Combination Ratcheting Wrench Black chrome finish is corrosion resistant and visually distinctive Fractional spline wrenches can be used on fractional 4, 6, 12 point, spline and Torx fasteners The chrome-vanadium switch lever allows for easy changes in turning direction which helps improve speed 15-Degree angled offset box end helps keep shank clear of obstructions Anti-Slip Design (ASD) open end