This is a replacement part for the DeVilbiss VacuAide suction unit. The accessories of the suction pump need to be replaced on a regular basis (for hygienic purposes). One end of the connection tubing should be connected to the VacuAide machine itself, the other end should be connected to the filter cartridge on top of the canister (container). The connection tubing has a length of 11 cm and is made of silicone.