Our 48 mm white matte polypropylene airless pumps with matching white matte snap on caps are compatible with our 50 ml and 100 ml Airless Pump Bottles. Simply press the airless pump and cap onto the top of the bottle, and they snap into place for a secure fit. These airless pumps dispense 1 ml of product per stroke and could be suitable for products such as lotions, shave gels, and more!