【Multiple Colors and Sizes】Heat shrink butt connectors includes 200pcs of crimp connectors in three colors and three sizes, providing you with options for different wiring needs. 20 pcs yellow heat shrink butt connectors (AWG 12 - 10), 90 pcs blue heat shrink butt connectors (AWG 16 - 14) and 90 pcs red heat shrink butt connectors (AWG 22- 18). 【High-Quality Material】Heat shrink connectors is made of premium tin-plated copper and polyolefin tubing. With a dual-layer design, the outer layer provides excellent moisture resistance and insulation, while the inner layer ensures superior conductivity. 【Easy to Use】Heat shrink crimp connectors are incredibly easy to use. Simply insert the wires into the waterproof connector, crimp the terminals, and apply heat to shrink the tubing. The heat shrink connectors create a secure and watertight seal, protecting against air, water,and dust. 【Reliable and Durable】The crimp connectors heat shrink connectors feature a clever design with a meltable adhesive lining that provides excellent cable sealing and prevents corrosion caused by moisture. Made from thick copper tubing, these heat shrink wire connector offer strong conductivity, stability, and durability, ensuring they won't crack or slip. 【Versatile Application】Designed for marine and automotive electrical systems, our wire crimp connectors can also be used in various applications such as household appliances, car, and electronics. Whether you're working on a car, boat, or home project, these waterproof heat shrink connectors are perfect for all your wiring needs., Manufacturer: ELECTRAPICK