Easy-to-install dispenser with a reverse pump system - Type: Reverse pump - Color: Black - Installation: Easy installation in 4 steps - Notes: Not compatible with certain pouch shapes This is a pump that allows you to hang and use refill packs of shampoo, etc., as they are. I was using a viscous treatment, but this made it easy! I have a spare one from a set, so I'm selling one. ⭐︎ Refill hanging reverse pump 1 piece Black Refill Refilling Replenishment Refill pack Shampoo Rinse Bottle Holder As is Hanging Official Hook Cover Hanging Dispenser Slimy Cleaning