Fangrui Product Details Fangrui Product Details This City Water Fills Flange Measures 3inch And Connects To 1inch Threaded Pipe On The Outside,3/4inch Threaded Pipe On The Inside. The Pipe Threads Are Plastic And The Outer Pieces, Plastic In Composition. Easy To Install And Use, Its A Terrific Alternative To A Brass City Water Fill. When Youre On Vacation, You Need To Have Access To Fresh, Clean Water At All Times. And In An Rv, That Means Having Your Fresh Water Tanks Filled And Ready. In Order To Get That Water In There, However, Youll Need A Water Inlet, Such As This City Water Fill. Dont Let Your Water Suffer From A Low-quality Inlet. Instead, Add This Model For Terrific Use And Life. Maintenance Water Tank: The Use Of The Water Filling Port Can Keep The Rv Water Tank Have Enough Water To Ensure That There Is No Restriction During Travel. Product Length: 77mm Product Width 75mm Product Screw Ring: 20mm Applicable Models: Applicable To Rvs Colour:black Material:abs Size:7.5x7.5x7.7cm/2.95x2.95x3.03 Inches Package Contents: 1 X Rv Water Fil