The scroll describes the spiral groove of the insert inside the jet covering flow range between 65-650cc/min. The large jets have 5-scroll or 5-grooves. Smaller ones are 3-grooves.
Vivid is no longer our dealer from August. If you wish to make a purchase, go to:
http://www.aquamist-direct.com/806-3...or-4mm-hose-r/