Can be used in many situations, not just with the Vintage Shop pumps. Our new prefilter is easier to remove by hand (no tools required), easier to inspect when is clogged, and does not affect the transfer speed/rate. There is less mess when you clean the screen on the go (as the liquid remains in the prefilter body) and creates zero turbulence 1n your wine. Strainer made of 304 Stainless Steel 40 mesh. A replacement or spare Pre-Filter for the H308 Super Transfer diaphragm pump.