Easy to install: Easy Install and unload. Operated by hand, quick connect fittings replace threaded or flanged connections, which require wrenches Applications: Apply to reverse osmosis water system and housing in line filters etc Size: Tube O.D. : 1/4"; Plug size: 1/4" POM materials: Can be used with plastic or soft copper tubing, truly demountable without hurt to pipe or fitting Quantity: 4 pcs quick connector + 5 lock clips, Weight: 0.0440924524 Pounds, Manufacturer: PXYELEC