For 310 ml cartridges
-Semi-cylindrical cartridge holder for quick change & stair hook
-Handle and trigger Particularly resilient and anatomic coated with rubber
-Extremely strong propeller (6,000N resistor)
-Practical for materials with high viscosity, particularly strong metal propellant
-Big hand pressure multiplication 17: 1
-Double prop shaft support with fixed material flow operation.
-Semi-Professional Use