Protect and organize your electrical connections with this comprehensive Heat Shrink Tube Kit, made from high-quality polyolefin material. Designed for reliability and durability, these heat shrink tubes offer excellent insulation and flame retardant properties, ensuring safety and long-lasting performance in various applications. Key Features: · Superior Insulation & Flame Retardant: Crafted from polyolefin, these tubes provide reliable electrical insulation and resist flames, making them safe for various electrical and electronic projects. · Wide Size Range & Color Variety: Includes 328 pieces in multiple sizes ranging from 1mm to 14mm inner diameter, and five vibrant colors (black, red, yellow, blue, green) for effective wire binding, color coding, and labeling. · High Shrinkage Ratio: With a 2:1 shrinkage ratio, these tubes contract to half their original diameter when heated, providing a tight, durable seal around wires and joints. · Versatile Applications: Ideal for solder joint protection, wire bundling, cable reinforcement, and labeling. Perfectly suited for headphone and mobile charging cables, LED filament maintenance, remote-controlled aircraft, vehicle repairs, and headband reinforcement. · Easy to Use & Portable: Simply cover the exposed wire or component, then use a heating tool to shrink the tube, forming a secure and long-lasting barrier. Compact and lightweight, this kit is easy to carry and store. · Wide Operating Temperature: Operates effectively in temperatures from -55°C to +125°C, with shrinkage starting at +70°C and completed at +110°C, ensuring robust performance in varied environments. · High Mechanical Strength & Dielectric Strength: Rated tensile strength of 10.4 MPa and dielectric strength of 15 kV/mm for excellent durability and electrical protection. Specifications: · Material: Polyolefin · Inner Diameters: 1mm / 2mm / 3mm / 4mm / 6mm / 8mm / 10mm / 14mm · Colors Included: Black, Red, Yellow, Blue, Green · Shrinkage Ratio: 2:1 · Operating Temperature: -55°C to +125°C · Minimum Shrinkage Temperature: +70°C · Complete Shrinkage Temperature: +110°C · Tensile Strength: 10.4 MPa · Dielectric Strength: 15 kV/mm · Quantity & Size Breakdown:  - 120pcs of 1mm x 40mm (various colors)  - 60pcs of 2mm x 40mm (various colors)  - 32pcs of 3mm x 40mm (various colors)  - 32pcs of 4mm x 40mm (various colors)  - 32pcs of 6mm x 40mm (various colors)  - 20pcs of 8mm x 80mm (various colors)  - 16pcs of 10mm x 80mm (various colors)  - 16pcs of 14mm x 80mm (various colors) Package Includes: · 328pcs Heat Shrink Tubes in assorted sizes and colors This Heat Shrink Tube Kit is an essential tool for electricians, hobbyists, and DIY enthusiasts seeking a reliable, versatile, and easy-to-use solution for electrical insulation, protection, and organization. Enhance your wiring projects with durable and safe heat shrink tubing designed to provide professional-grade results every time.