1/4″ & 3/8” Pressure Washer Quick Coulper Colored O-Rings 50+50 100 Pack （Or… by | Jul 21, 2026Application: Pressure Washer Quick Connect Fittings. ✔ Suitable for hot and cold water pressure washer systems. ✔ 50 pieces for 1/4″ quick connect couplers. ✔ 50 pieces for 3/8″ quick connect couplers.
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