The Trimteck TT015560-652-000 Bellows Stem Assembly is a set of three units designed for use in metering and dosing pumps in the hydraulic, pneumatic, pump, and plumbing industries. Made by the trusted brand Trimteck, this bellows stem assembly is specifically designed for 4-stroke pumps in sizes 100 and 200. With its high-quality construction and precise engineering, this product ensures accurate and reliable pumping performance for various industrial applications.