A professional tool kit designed to meet the needs of specialised automotive and mechanical services. The sockets and drive shafts are made of durable tool steel. The sockets are forged and calibrated with precision gauges prior to hardening. Sockets with AS-Drive system, which increases the maximum torque by 25%, with full protection of the edges of the nuts. The drive shank, made of CrV 6140 steel, has 72 teeth and is manufactured to the highest technological standards. The case also includes bits made of hard S2 steel.