The small size of the UY2/UY2-D solvent resistant connectors reduces the splicing bundle O.D. to a minimum. Their two ports accept two solid copper conductors that can be of different wire gauges.The connector is filled with a sealant to provide moisture resistance. In addition, the UY2 connector is available in a dry version, UY2-D connector. Choose any one of the 3M Scotchlok Crimping Tools E-9 to use with the UY2 connector.