16 piece t handle trx star hex key set siegen tools s0916 hardened and tempered chrome vanadium steel shafts with a polished satin finish tough composite comfort grip handle allows extra torque to be applied to the fixing each handle incorporates either a long trx star and short security trx star shaft or a long ball end hex and short hex shaft supplied in storage case siegen s0916 t handle trx star hex key set 16pc