500Pcs Solder Seal Wire Connectors, Self Soldering Heat Shrink Wire Connectors Specification: Quantity: 500 Pcs Package Includes: How to use: Note: Material: WATERPROOF AND INSULATION: Solder Seal Wire Connectors provide a reliable solution for waterproofing and insulation. Polyolefin outside tubing provides insulation and improves pullout strength. VERSATILE: Excellent stability, water resistance and suitable for a wide range of applications. They can be used in automotive, marine, home electronics, and outdoor lighting projects. DURABLE: Made from high-quality materials, Solder Seal Wire Connectors are built to last. Premium tube materials are specially designed to be used in harsh environments. Offer protection to the wires and cables from abrasion,cutting,scuffing and low impact situations. SIMPLE TO USE: The connectors are easy to use, even people without professional knowledge can perform maintenance. Solderless, crimpless, all you need is just a heat gun to finish the joint, allowing for a fast and hassle-free installation. PREMIUM SOLDER SEAL RING: Solder Seal Wire Connectors use high-quality solder sealing rings. The enough solder around the wire,Melt and flow until form seal on the wire, that provide a strong and long-lasting connection.