3M DBY/DBR Direct Bury Splice Kits are real time savers when installing underground electrical systems. Every component for the splice is included in the kit. The insulator tube is pre-filled, eliminating the chance of the installer using too much, or too little sealant. No crimping tool, no waste, no mess. Just quick, reliable underground splices for irrigation and sprinkler systems, landscape lighting. The splice may be re-entered without cutting the wire (new tube required). These 3M under-ground electrical wire connectors splice and effectively moisture-seal two or more conductors.