The Vitron rubber o-ring withstands the harshest chemicals, preventing leakage of important and costly chemicals. Chemical resistant polymers that make up the trigger sprayer prevent degradation, so the trigger sprayer continues to perform when used with the most severe chemicals. The 28/400 mm thread finish is designed to fit the most popular bottles and containers. Sprayer/Hose/Nozzle Type: Sprayer; For Use With: 32 oz Bottles; Material(s): Polypropylene; Color(s): Yellow/White.