BMC Inflatable Boats Ribs Outboards. Fits valves: 500112-3 (A7), 500114-5 (B7), 500116 & 500117 (C7), 500134-7 (D7) & 500118 (Zodiac Delrin). Avon Part Number V02598. The OD of the adaptor is 18 & 22 mm.
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