FeaturesRACO® steel set screw connectors provide concrete-tight connections when tapedRACO® set screw connectors are suitable for applications above 600 VACAll steel construction insures mechanical protection for the racewayTri-head screws may be installed using a slotted, Phillips or Robertson head screwdriver2-1/2 in to 4 in trade sizes are also UL listed for use on Rigid/IMC conduit, allowing for design and installation flexibilityAll components are zinc electroplated for corrosion protectionUPC bar coded fittings are individually polybagged with a preprinted UPC-A bar code and packaged in pre-scored tear top cartons for an attractive presentationProvides a concrete tight connection when taped0.115 in THK