Washing machine hose is ok, But you cant tighten it enough, mine blew several times.
Lee that connector is 3/4 BSP it screws directly onto the hose reel, with the help of some PTF tape.
It spins at the push fit connector end, im not sure about the longevity of this yet as I have only been using it for 4 weeks, but it spins beautifully, and does leak a drop.