Works to get the unit moving again on its own.Thought my cleaner was history wasn’t moving forward the old brush was worn down this solved the issue.Worth every cent$Didn’t fit.pool store said there was nothing wrong with it, it was my pool suction even after I told them my suction was fine. Wanted me to buy a new one @ 400+. Fixed it myself. Great buyRight from the package the rubber skirt was stuck together and the rubber seemed like if it was old and had started to rot. Against my better judgement I proceeded to install and a few days later found pieces of it in my pool filter. When I inspected the pool vacuum, the skirt had broken in various areas. Had to go out and buy another skirt to keep my vacuum working and cleaning my pool!!Just what I neededThe part is original and works well.Great replacement part exact fitment on my 3 year Pentair great white! Good thing is i got the rubber skirt with it. My pool suction vac works like a champ! Thank you !