Gastronique is specialized in and supplies T&S Brass and Bronze Works, Inc. pre-rinsing units and its components.
There are two pre-rinse unit series in circulation. The EU-series has short stubby lever handles and the EB-series has pointed long lever handles. The only differences are the cartridges and lever handles. T&S Brass and Bronze Works, Inc. has its own screw thread whic appears to be 1/2" but that is not the case, universal 1/2" parts do not fit on T&S Brass and vice versa. Fill in "EU-serie" or "EB-serie" in the search box to see the differences.