This gravity-fed dispenser works with smooth & pumice formulations for easy access to hand cleaning. A separate piece pulls out of the dispenser to replace the top of the 4.5 lb. plastic refill cartridge of GOJO Hand Cleaner (0905-6, 0515-06, 1115-06 & 1135-06). Mount dispenser to a wall. Once properly fitted with the new top that is included in the dispenser, you can simply turn over the cartridge, slide it onto the dispenser & pump for effective cleaning. 2" long screws for mounting are not included.