NEW! PFA Stem – for the toughest liquid dispensing applications; use with highly corrosive fluids, virtually all industrial solvents, and most chemicals Superior Chemical Resistivity – chemically inert; resistant to acids, bases, and most common solvents. See PFA Chemical Resistance HERE. Non-stick, low-friction properties - transport fluids and chemicals with minimal resistance Pack of 10 replacement stems for 35770 and 35771 stainless steel pumps Stem length – 2.08 in; Inner diameter of the stem: 0.16 in +/- 0.005 in Made in the United States of America for superior qualityThis item is stocked in Santa Barbara, CA.