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sourcing map Straight Brass Barb Fitting Reducer, Fit Hose ID 21mm to 15mm 2pcs : Amazon.co.uk: DIY & Tools
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4mm 5mm 6mm 8mm 10mm 12mm 14mm 16mm Tee Type Reducing Hose Barb Brass Barbed Tube Pipe Fitting Reducer Coupler Connector Adapter,8-6-8mm OD : Amazon.co.uk: DIY & Tools
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