Smseace 80Pcs 4/6/8Awg Non Insulated Butt Connectors Kit With Heat Shrinkable ? Package including: You will recevie 40pcs non insulated butt connectors+40pcs Heat shrinkable tube(AWG4: 10pcs; AWG6:10pcs; AWG8:20pcs). All terminals are packed in transparent plastic boxes, which is convenient to use and carry. ?Premium Quality: Our Non Insulated Butt Connectors are made of high-quality purple copper material with a tin-plated surface, ensuring excellent conductivity. Say goodbye to overheating issues with these connectors! ?Easy Installation: Designed to work seamlessly with complementary heat shrink tubing, our connectors feature a wire barrier in the center to maintain balanced pressure on both sides, preventing wires from slipping out. ?Oxidation Resistant: The acid pickling process on the surface provides extra oxidation resistance, prolonging the connectors' lifespan and reliability. No more worrying about corrosion affecting your connections. ?Securel Connections: Equipped with matching heat shrink tubes for added protection, our connectors are designed for easy and secure installation. Get your connections done efficiently and securely every time.