Comprehensive driver security and tamper proof bit set high quality chrome vanadium steel bits suitable for a wide variety of applications supplied in carry case contents bits trx star security9pc trx star9pc hex metric9pc hex imperial9pc flat screwdriver9pc pozi screwdriver8pc phillips screwdriver8pc hex security metric6pc hex security imperial6pc tri wing4pc square4pc spanner4pc torq3pc spline3pc butterfly3pc special hook bit magne