Mastic cartridge gun, Convoy Just, Tajima Extra-long body. Rotates 360°. Double transmission system. Technical data : For cartridge 310 ml Body material Metal Handle material Resin Pusher system TT System 360° RH Yes AFS System Yes TT System: The 4 edges of the plate increase the extrusion force of the pusher. An aid for extruding highly viscous materials. 360° RH: For use in confined spaces. AFS System: The plunger retracts a few millimetres after each push to stop the flow quickly and effectively.