Upgrade your electrical projects with our 100Pcs 22-16 AWG Red Heat Shrink Butt Wire Connectors. Designed for durability and reliability, these connectors feature a tinned thick red copper barrel and polyolefin heat shrink tubing with a 3:1 shrink ratio, ensuring secure crimping and tight wire connections. Certified to meet CE, RoHS, ISO9001, and SGS standards, they provide a safe and secure experience for a variety of applications. The thick tinned copper and seamless barrel design offer strong and secure crimping, while the polyolefin heat shrink tubing provides high tensile strength and resistance to mechanical damage. When heated with a heat gun, the adhesive inside melts to create a waterproof and insulated seal, preventing electric leakage and corrosion. Ideal for automotive, marine, science projects, and household electrical connections, these connectors are built to last. Each pack includes 100 pieces, offering great value for your electrical needs. Choose our heat shrink butt splices for reliable, durable, and versatile wire connections.