Appleton® Cable Gland Connector, Series: TMC2, 2-1/2 in Trade, Cable Openings: 2.27 to 2.72 in, Type JMC/MC/Teck Cable, NPT Connection, 360 deg Angle, Copper Free Aluminum, -60 to 110 deg C, 3.54 in Dia Across Flat x 3.82 in Dia Across Corner x 3.7 in L Dimensions