Collection Canister Carrier Carries up to four disposable collection canisters of either 1500 ml or 2400 ml size. Easy to clean, durable chromeplated steel construction. No-snag, free-spinning rotating casters. Comes with a DISS swivel-nut connection for attaching a suction regulator, a 5/16" barb fitting for attaching a vacuum hose, and two shut-off valves for regulating the suction to the canister. Four slide brackets are permanently affixed to the pole. 20-02-0023