50Pcs/Lot 1/4" Bulkhead Straight RO Water Fitting 6.5mm Clapboard Coupling POM Hose PE Pipe Connector Water Filter Parts 50Pcs/Lot 1/4" Bulkhead Straight RO Water Fitting 6.5mm Clapboard Coupling POM Hose PE Pipe Connector Water Filter Parts. Sale price : $7.77 Category : Home Improvement