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An 8 mm (5/16 in.) O.D. rigid plastic joiner, used to join together 8 mm Duotight push fittings.
An 8 mm (5/16 in.) O.D. rigid plastic joiner used to join together 8 mm Duotight push fittings. This piece measures roughly 2 inches long and is perfect for joining 8 mm duotight fittings in all your duotight gas and liquid configurations!