Torx T15x100 mm screwdriver by Yato YT-25956. A cylindrical mandrel, made of steel with the S2 symbol, hardened to about 58 HRC. The surface of the satin, the working tip is hardened and sandblasted / strengthens the stability of the grotto /. Handle made of properly selected materials of various hardness. The Torx Securiti tip has an internal hole for supporting secured sockets.