Convenient packaging combination: This kit contains practical tool combinations; each solid packaging contains 3 underground joint kits and 10 thermal contraction pipes, providing a comprehensive on -demand solution for electric wire maintenance and installation. High -quality materials: Silver underground connector kit contains 3 seamless copper docking connectors; these connectors are 15 mm in length, 5.5 mm outer diameter, and inner diameter of 3.9 mm. Professional maintenance and installation tools: Special suitable for installation and maintenance of submersible pump line accessories kit, providing a simple, wind -proof and waterproof solution for disconnection maintenance Simple installation process: We simply explain to the simple splicing process; all users need a heat source like a lamp, or an electric gun used for wire heating, so as to achieve a relaxed DIY experience Efficient stitching is completed: When the tube shrinks and forms, the perfect seal process is completed when the sealing agent seeps out from the end, providing effective and easy -to -verify stitching Colour:As Shown Material:Metal Package Contents: 1 set x extension cord repair kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.