Welcome to our store! This heat shrink kit is very suitable for any workshop project, wire breakage repair, electrical insulation, mechanical protection, bandwidth, wire connection, wire end process, wire/cable joints, daily maintenance, color coding, etc. These heat shrink sheaths have a shrinkage ratio of 2:1 and are made of polyolefin, with good electrical insulation or insulation for open or connected wires. Heat shrink tubing length: 45mm, inner diameter: 1mm/1.5mm/2mm/2.5mm/3mm/3.5mm/4mm/5mm/6mm/7mm/10mm/13mm. Various colors of heat shrink tubing: 5 colors (yellow, blue, black, green, red) in a 12 compartment organizer, making it an ideal choice for home and car DIY. RoHS certified, easy to use, use these tubes to cover the exposed parts of the wires, heat them with a soldering iron, heat gun, or even a hair dryer (hot enough), shrink the tubes to protect the wires, and provide you with a professional repair appearance Due to manual measurement, the product you received may have some dimensional errors Due to different monitors, the product you received may differ slightly from the picture Actual delivery quantity: 850 pieces 100% Satisfaction - Our customers are our top priority. If you find any product problems after receiving the goods, such as damage and incorrect quantity of goods, please contact the seller immediately. We try our best to provide you with satisfactory after-sales service.