Feature: 1. EASY TO OPERATE: Solder sealed wire connectors do not need to be crimped, just put the stripped wires into the solder sleeve and heat evenly to complete the connection 2. WATERPROOF PERFORMANCE: Double wall design (polyolefin tube on the outside, hot glue and solder on the inside) to ensure perfect insulation and waterproof performance, prevent wire corrosion even in humid environment 3. NO SLIDE WIRE CONNECTION: The hot glue properties of the internal solder ensure strong tensile strength and tear resistance. When heated, the solder melts to hold the wires securely and will never slip out of the connector 4. SUFFICIENT QUANTITY: A Total of 270 soldered heat shrink connectors, specific colors in specific sizes, and clear sleeves provide precise visual inspection during the connection process. 5. WIDE APPLICATIONS: Solder wire connectors are best for your ships, vehicles, airplanes, homes, and even science projects, ensuring safe and weatherproof soldering. Specification: Item Type: Solder Seals Wire Connectors Model: HX030001 Material: Outside is polyolefin tube, inside is hot glue and solder Shrinkage Rate: 2: 1 Parameter: Color Connector Size (Approx.) Wire Size (Approx.) Applicable Cable Quantity (Pcs) A(Minimum) L(Minimum) B(Minimum) BC(Maximum) C(Minimum) A.W.G(mm²) 270 Red 2.7mm / 0.11in 40mm / 1.57in 1.4mm / 0.05in 2.7mm / 0.11in 1.2mm / 0.047in 22-18(0.5-1.0) 100 Blue 4.5mm / 0.18in 40mm / 1.57in 2.3mm / 0.09in 4.5mm / 0.18in 2mm / 0.08in 16-14(1.5-2.5) 90 White 1.7mm / 0.07in 26mm / 1.02in 1mm / 0.04in 1.7mm / 0.07in 0.76mm / 0.03in 26-24(0.25-0.34) 50 Yellow 6.0mm / 0.24in 40mm / 1.57in 3.7mm / 0.15in 6.0mm / 0.24in 3.4mm / 0.13in 12-10(4.0-6.0) 30 . Package List: 270 x Solder Seals Wire Connectors1 x Storage Box