The WIHA MagicSpring® Torx® T30 L-key features an arm that is 15% to 20% longer than other L-keys. Made from chrome-vanadium-molybdenum tool steel through hardened for best wear resistance. Exclusive MagicSpring holds screws securely and virtually eliminates screw head cam-out. MagicSpring doesn't weaken tool or interfere in use. Precision machined tip for exact fit.