Trim Kit for 3-handle Shower Valve, Fit Delta Washerless Shower, Satin Nickel -By Plumb USA 38804 This is not a complete shower set. This is a trim kit only. Convert your lifeless shower into classic and elegant Satin Nickel Finish Fit Delta 3-handle shower faucets with washerless cartridges. Cartridges shown in 5th picture, not included in kit. The sleeve diameter: the threaded part is 1" diameter(25cm),the opening on the other side 5/8"(17cm)