Never done this before was a confronting experience.
When you think your done, you're not...... not even close
A little bit of a toy, but works with preservation.
The suction cap and bag work well to give a good secure head of water. However the male nozzle attachment is a bit short for the intended use. The female attachment is much better... longer with a rounded end for more comfortable use, but the holes are too small for good water flow. A quick modification with a small drill soon sorts that out and hey presto, your good to go!