Features • Extensive Variety: 260 pieces included, featuring 120 wire lugs in AWG 4 to 12 and 140 heat shrink tubes in 2 sizes for versatile applications • Superior Conductivity: Crafted from tinned and annealed electrolytic copper, ensuring maximum conductivity and reliability for all your electrical connections • Exceptional Durability: Designed for high-temperature environments, providing a firm connection that enhances isolation and simplifies wire insertion • Versatile Applications: Perfect for use in distribution boxes, boats, solar panels, vehicles, and various home electrical projects for greater utility • Organized Storage: Comes with a semi-modular container that keeps all sizes separated and easily accessible, making transport and storage hassle-free Features: 1、Good abrasion resistance and environmental protection, specially designed for harsh environments, to provide protection for wires and cables 2、In the case of preventing abrasion, cutting, abrasion and low impact, it creates a cable entry and provides environmental protection 3、Advanced solder ring, enough solder to melt and around the wire until a is formed on the wire, ensuring a lasting connection 4、Good weather resistance, the adhesive provided by the right amount of hot melt adhesive system, cools, hardens, and reaches the bonding strength within a few seconds, giving a lasting bond 5、Quick to operate, only a heat gun is needed to fix and connect the wires tightly. Specification: Item Type: Heat Shrink Tube Material: Nylon, tin Uses: Industrial production, electrical circuits Wiring Range: SST-S41 (yellow): 4-6mm2 SST-S31 (blue): 1.5-2.5mm2 SST-S21 (red): 0.5-1.5mm2 SST-S11 (white): 0.25-0.34mm2 Stripping Length: Approx. 10mm / 0.4in Working Temperature: -55℃-125℃ Start Shrinking Temperature: 80℃ The Temperature at Which the Solder Begins to Dissolve: 138℃ Complete Melting Temperature of Solder: 160℃ Shrinking Temperature: >160℃ Dielectric Strength: 1KW Protection Level: IP67 How to Use: 1. Get ready to strip the wires 2. The casing is inserted and the wires are connected 3. Heat it with a heat gun 4. Make it shrink and set Package List: 50 x Heat Shrink Tube Package List 50 x Heat Shrink Tube