New, Unopened This is a set of adapters, rings, and rubber packing for the ReFa Fine Bubble S shower head. - K: For KVK shower hoses (Hose connection thread size: M22 x P2) - M: For MYM shower hoses (Hose connection thread size: W23 x 14 threads) - G: For Gaster shower hoses (Hose connection thread size: M22 x P1.5) - Outer ring - Rubber packing (thin) I am selling these as I have no use for them. Instruction manual is not included. Will be shipped in simple packaging.