Specifically designed to scrub ; guaranteed to not damage, and gently clean your standard diameter (22mm) CPAP / BIPAP hose or tubeThe bristles on the tube brush gently clean your CPAP tubing and greatly reduce the chance of growing mold or bacteriaSave time by efficiently cleaning your standard 22mm CPAP tubing in one pull. Results in cleaning your tubing more often with less hassle.Instant solution to keep your CPAP hose clean with either a 1 time pull-through or a more thorough tube cleaning. It works with many major brands of standard 22mm size CPAP, BiPAP or any other PAP circuit: Resmed, Phillips Respironics, Eva Medical, PMI, Marble, Easy Flex, AG Industries, Plastiflex, Fisher & Paykel, Puritan Bennett & more