Crouse Hinds RE32SA Reducer. EATON Crouse-Hinds Reducer, Threaded Throat, 1 x 3/4 in, For Use With: Rigid/IMC Conduit, Copper-Free Aluminum, Aluminum Acrylic Painted/Electro-Galvanized. Additional Description: CRHD-RE32SA 1 TO 3/4 AL REDUCING BUSH. Catalog Description: Eaton Crouse-Hinds series RE reducer, Rigid/IMC, End 1: 1 NPT, End 2: 3/4 NPT, Copper-free aluminum.