10 Pack PetsTEK&Acirc; Waterproof Wire Splice Kit for Wire Break Repair in Electric in-Ground Dog Fence Systems PetsTEK Wire Splice Kit for Electric In-Ground Dog Fence Systems. Compatible with All PetSafe, SportDog and Dogtra Underground Fence Systems. Package Contains 10 Wire Splice Kits  10 Tubes, 10 Wire Nuts and the Instruction Card. The Tube is Filled with Waterproof Gel, That Protects Exposed Wires from Rust and Corrosion. The Kit is Designed to Work with 12, 14, 16, 18 And 20 Gauge Wires. Total Tube Length (including the cap)  2.68, Inside Tube Diameter - .5. PetsTEK Waterproof Wire Splice Kit is Made in the USA.