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Amazon.com: Dracaena 1 meter/39.3 inch soft tube with PVC material, ID 3/8'' and OD 5/8''- PVC pipe soft tube for Computer water cooling systems ( Transparent) : Electronics
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uxcell PVC Hose Tube, 7mm(0.27") ID x 10mm(0.39") OD 1.5m/4.9ft Clear Vinyl Tubing, Plastic Flexible Water Pipe - - Amazon.com