A bottle for precise (re-)filling of watercooling systems! This wash bottle can be filled with the desired coolant and by squeezing the bottle the reservoir can easily be filled without any spills! But the bottle can also be be used to pump out the coolant by first squeezing out air and then inserting the nozzle into the reservoir - the bottle will then suck in coolant. Especially when expanding, cleaning or rebuilding the system this bottle can effectively help to reduce the mess that is often created. The bottle is shipped with an additional screw cap to seal the coolant tightly.