Thomas & Betts H075CP Electrical Fitting. T&B® Hub Connector 3/4 in Size For Use With: Rigid/IMC Conduit Zinc Polished Chrome 1-19/32 in H x 1-21/32 in W Dimensions. Additional Description: TB -H075CP (T) 3/4 INCH CHROME PLATE HUB. Catalog Description: 3/4 Inch Zinc Hub Connector with Chrome Plating Thermoplastic Insulating Throat Sealing Ring Nitrile (BUNA-N) for Use with Rigid/IMC Conduit.