This double gooseneck is intended for use with waterfed poles. It threads onto waterfed poles with European threads. For the tools, it has European threads on one side and has a standard acme threads on the other side. Saves time as you do not have to bring the pole down to change tools. Use the acme side for scrub pads and brushes or add a taped tip (sold separately) to use with a squeegee or washer.
Use with waterfed poles with European threads
European and Acme threads for tools