Fit 1 liter (33. 8 oz. ) bottles Work with bottles of soaps, lotions, hair Shampoo and conditioners, oils. The soft tube has a weight on the end that keeps it in contact with the bottom of bottle. The suction tube, made of food grade sillicone, can be cut short to meet your needs. Bottle neck: 28mm" (Fits 1 inch bottle necks) Brushed pump top reduces the adhesion of fingerprints and oil to ensure the visual clean. These dispensing pumps are white PP plastic 28-410 ribbed skirt down-lock dispensing pump with 10 inch soft dip tube and dispense just the right amount (4 mL output). This closure fits containers with a 28-410 neck finish. The soft dip tubes fit all types containers, big or smaller, short or long(less than 14 inch). The weighted end goes to the lowest area to collect last drop of soap. Assembly process is very easy. Suitable for various liquids.