Fits 12/16mm Hose. : Use this handy ball valve for low-pressure applications like canister filters, pump return lines, and more. Positive barb retention and connection. Easy adjust valve control. For 12/16mm piping (12mm internal diameter, 16mm outer diameter) Ideal for maintenance of aquarium filters and pumps. Allowing quick disconnection and reconnection to the filtration/pumping system with minimal water spillage.
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