Upgrade your electrical connections with our Blue Heat Shrink Butt Connectors. Designed for durability and reliability, these connectors feature a heavy-duty tinned copper core that ensures a strong crimp and higher conductivity. Each package includes 100Pcs of blue heat shrink butt connectors, suitable for wire sizes ranging from 16 to 14 AWG, making them perfect for a variety of projects. The solderless crimping process is simple and efficient: just insert the wires, crimp both sides with crimping pliers, and then apply heat with a heat gun for a secure and durable connection. The marine-grade heat shrink tubing offers a 3:1 shrink ratio, providing high tensile strength and enough hot melt adhesive to ensure waterproof performance, so your wires will never slip out. These waterproof, stable, and corrosion-resistant wire connectors are ideal for use in automotive, marine, electrical, and electronic industries. Whether you're working on a car, boat, or electronic device, these connectors will provide long-lasting performance and reliability in various applications. Choose our Blue Heat Shrink Butt Connectors for all your electrical connection needs and experience the difference in quality and durability.