he sent me some many moons ago.....(when he ways talking to me)....I put it on my hose but never blew up to know it it worked or not.....it is in New Mexico with my old Vortex...........
Use it on the 50 ft. of paraflex that I carry in. Dramatically reduces the Chatter of the hose on hard surfaces and around the corners. Might be a slight increase in water temp, but slight.