Simplify your shower routine with the Universal Dispensing Pump by BAR5F. The industry benchmark for lock-down dispensers and water ingression protection, this bottle pump dispenser is designed to deliver performance and maximize the usage of your product. Ideal for shampoo, conditioner, liquid soap, lotion and oils, this functional bottle dispenser is suitable for both consumer, professional and salon brand products, and delivers the perfect portion with every pump to eliminate waste and extend the usage of your product. Designed to prevent leaks and spillage, the compact lock-down feature provides a clean, sleek look on the shelf to keep your shower tidy. Once unlocked, simply push down and turn the pump 180 degrees counterclockwise to lock it again. With a seal-tight fit, this N18 series BAR5F pump protects your product and reduces the risk of bacteria by keeping water out of the bottle. This bottle pump goes beyond ordinary dispensers with its easy, one-handed application and fits standard size bottles from 12 oz and up to 33 oz (1 Liter) with 28mm (1 inch) in neck diameter. The pump?s measurements are as follows: Neck = 28mm (1 inch); Height (closed) = 10.375 inches; Height (open) = 11.5 inches. The tube can easily be trimmed to fit on shorter bottles. Please measure your bottle?s neck and height to ensure compatibility prior to purchase and follow the enclosed, step-by-step operating instructions before initial use.