EXGJH flexible coupling with explosion proof, dust-ignition proof UNILETS® for use with threaded rigid metal conduit and IMC. Suitable for wet locations with two removal male nipples. Outer bronze braid, inner brass core with insulating line. Smooth, rounded integral bushing in each hub protects conductor insulation. Accurately tapped, tapered threads for tight, rigid joints and ground continuity. Heavy duty design resists mechanical abuse.