Name:40mm Plastic Foaming Dispenser Neck size:40mm Material:Platic (PP) Application:bottle,used in nearly any type of liquid and produce rich foam . Other size:28mm,30mm,42mm,43mm Customized color available Screen printing or labelling available If interesting,we can talk the size,price,quality,packing,delivery time ,deails...on my mail or other soft . In addition,no problem to send you samples so that you can test them .