Quick Connection Fitting ¼ inch for Easy Connection.
Depending on your needs,You can fill a variety of particulate filter(Tourmaline,Resin filter,Mineralization ball and so on)

Color:blue + transparent
Material:ABS
Shell size is about 25.4cm

Package Contents:
4 x Household pre-filtration

Only the above package content, other products are not included.
Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.