Professional set of Yato, used for unscrewing special screws of torx type Variety of sizes provides the ability to perform many jobs in specialized mechanical and automotive services The bits have two lengths 30 mm, mounted in a hex chuck and 10 mm, adapted to work with a 1/2" ratchet The set is made of the highest quality S 2 tool alloy 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