BiTorsion Bits for recessed TORX® screws in a practical Bit-Box. Come with an elastic torsion zone where kinetic energy is diverted to when peak loads prevail and a softer BiTorsion zone to prevent the bit tip from twisting during peak loads: this significantly prolongs the product service life; with "Take it easy" Toolfinder: colour coding according to profile and size stamp; tough viscous design for universal use; 1/4" hex, suitable for holders as per DIN ISO 1173-D 6.3.