I dunno who makes it, but I have always used a high-flow single jet single bend swivel head stair tool. I think they are a bit nicer with the jet guard on them to keep the hoses from interfering with your spray jet, but you can't really see what you are doing if you have the guard on it, so I am kinda happy not having it this time because I have more control over what I am doing because I can see what is happening.