Chemical Resistance Equipped with an EPDM rubber O-ring and piston cup, offering broad resistance to many common janitorial chemicals Durable Construction Features a heavy-duty metal plunger shaft that will not break like plastic shafts, ensuring long-lasting performance Adjustable Nozzle Nozzle easily adjusts from a stream to a fine mist, providing versatility for various applications Easy Refilling Wide mouth opening allows for quick and hassle-free refills, enhancing convenience