T3 Series Cable Gland Connector, Size: 1/2 IN (20), Conductor Range: Inner: 0.26 - 0.55 IN, Outer: 0.49 - 0.82 IN, Material: Brass, Finish: Nickel Plated, Connection: NPT, Dimensions: 1.2 IN Across Flat X 1.31 IN Across Corner X 3.07 IN