With aluminum container, double pump and rotary piston, the all-metal construction has a main and head pump, the gravity-guided, rotating-bearing suction piston ensures that the container is completely emptied, when used upside down, the head pump provides full oiling effect, container material is ND-PE, pumping mechanism is made of brass, stroke volume of the main pump 0.2-1.5 ml, head pump stroke volume 0.2-0.8 ml, spray tube length 130 mm