A communication control system includes: a packet transmitting device for transmitting a received packet according to a packet process rule which is a rule defining a process for the packet; and a control device for controlling a transmission route of the packet, by instructing the packet transmitting device to apply the packet process rule. By casting based on a cast mold model, a mold material is produced in a form having a work margin. The first wringer surface may be flat and also perforated. The trigger arrangement of the present invention presents an actuator shaft movable longitudinally in response to trigger movement for engagement of the needle of the nozzle head.