3M Direct Bury Splice Kits combine the quick, reliable connection of a 3M Performance Plus Wire Connector R/Y+ with a high-impact, UV resistant tube prefilled with moisture resistant grease. Electrically connect two or more pre-stripped 18-10 AWG copper wires and moisture seal the connection for direct burial. Connector features steel spring construction and flame retardant insulation. UL Listed for 600 volts in direct bury applications. Listed for use in wet, damp, direct bury and submersible locations with UF type cable.