Product dimensions : 148 x 4 x 29 mm (LxWxD) Application : For all hard-to-reach TORX ½ screws. Extra : With elongated TORX ½ profile behind ball end. Extra : The TORX ½ ball end enables fastening and unfastening at an angle of up to 25 ½. Blade : Chrome-vanadium steel, through hardened, black-finish.