Elevate your wire management with our Heat Shrink Tub kit. This assortment includes 328pcs of 2:1 Shrink Ratio Polyolefin Tubing in 6 colors (Yellow, Blue, Black, Green, Red) and 6 sizes (1.5mm, 2mm, 3mm, 4mm, 5mm, 6mm). UL certified and designed to withstand all elements, our durable electrical shrink tubing provides a fast and secure way to wrap wiring harnesses. Suitable for various applications including electrical insulation, strain relief, cable bonding, and color-coding. Made of high-quality polyolefin with excellent flame retardant and insulating properties, it offers a 2:1 stronger retraction ratio for effective wire insulation and protection against extreme heat, chemicals, and UV exposure. Perfect for use in aircraft, boats, military vehicles, and more.