15-PIECE SPECIALTY TORX WRENCH SET Professional bit set for loosening special Torx screws. The variety of bits allows for a wide range of tasks in specialized mechanical and automotive workshops. The bits are 30 and 75 mm long and mounted in a 10 mm hexagonal chuck, compatible with a 1/2" ratchet. The set is made of the highest quality S2 alloy tool steel, which is characterized by: high hardness of HRC 58-62, uniform, fine-grained material structure, resistance to torsion, high tightening torque - 21.8 Nm, excellent hardening