Set Screw Conduit Coupling 316 Stainless Steel Trade Size 1 1/2 in Overall Length 2 1/4 in Finish Polished Compatible Conduit Type EMT Thread Size 1 1/2 In.-11 1/2 Conduit Fitting Type Coupling Standards UL For Use With EMT For Conduit Type EMT Weight 0.28 lb Compatible Conduit Trade Size 1 1/2 in Connection Type Set Screw Indoor/Outdoor Usage Indoor/Outdoor Inside Diameter 1.75 in Outside Diameter 2.25 in