Hey friend, welcome to UKPACK. Our syrup pumps, has a wide range of shapes of pump head, such as STD(standard head), MD(MacDonald),Norrow head, and Large head. About Norrow head, it is supposed to be used the most by the Nestle brand. You usually can see it be used as dispensing Coffee-mate liquid coffee creamer, this pump perfects to match with nestle liquid creamer bottle. Also, 31mm of the neck size is suitable for Monin syrup pump, too! Besides, it also can be match any other just 31/410 closure size of bottles. Samples are provided you freely to support your evaluation!