Commercial Electric Heat Shrink Underground UF Splice Kit HH-UFSK - The Home Depot
ThermoShrink Underground Splice Kit 28 AWG
14 TO 8 GAUGE UF WIRE, CU ONLY, UL LISTED, UNDERGROUND SPLICE KIT. 4 CONDUCTOR. INCLUDES 1 CONNECTOR AND 1 PIECE OF HEAT SHRINK TUBINGSouthern Tier Electric Supply
Gardner Bender Butt Splice Kit 8-2 AWG in the Heat Shrink Tubing department at Lowes.com
IDEAL Thermo-Shrink AL/CU Underground Splice Kit 46-401 - The Home Depot
3M UF1-SPLICE-KIT UF1 SPLICE KIT ST | NorthEast Electrical