【3:1 SHRINK RATIO & DUAL WALL DESIGN】Featuring a 3:1 heat shrink ratio, the heat shrink tubing can shrink to 1/3 of its original diameter for a tight, secure fit. Built with a dual wall design containing adhesive lining, create a marine grade waterproof seal against moisture and air leakage. 【114 PCS KIT WITH COMPACT STORAGE CASE】This heat shrink tubing kit comes with a durable plastic storage case with separated compartments, ontains 6 pcs of 1/2" (2.4" long), 6 pcs of 3/8" (2.4" long), 6 pcs of 5/16" (2.4" long), 48 pcs of 3/16" (1.7" long), and 48 pcs of 3/32" (1.7" long), includes five diameters, each in six colors (black, red, blue, yellow, green, white).Perfect for color-coding, organizing messy wires, and replacing worn wire cable jackets. 【FLAME RETARDANT & HEAVY DUTY PROTECTION】Engineered with high-quality materials, our wire shrink wrap tubing provides excellent flame retardant, oil-resistant, and wear-resistant insulation. Capable of withstanding temperatures from -55°C (-67°F) to +125°C (+257°F), ensuring long-lasting, heavy-duty durability for tough industrial environments. 【EASY TO USE FOR QUICK REPAIRS】Simply slide the insulated sleeve over your spliced wires or connectors and apply heat using a heat gun, lighter, or candle for fast and uniform shrinkage. This extension cord repair kit is ideal for fast DIY wire insulation, phone charger protection, and headphone cable maintenance for both beginners and professionals. 【PRACTICAL GIFT FOR MEN】Widely used for automotive wiring, marine electrical repairs, and household DIY projects. Neatly packaged as a versatile tool kit, this wire cable kit makes a thoughtful gift for dad, husband, boyfriend, electricians, and DIY enthusiasts on Father’s Day, Christmas, birthdays, or any special occasion. Eugiichr Heat Shrink Tubing Kit contains 6 pcs of 1/2" (2.4" long), 6 pcs of 3/8" (2.4" long), 6 pcs of 5/16" (2.4" long), 48 pcs of 3/16" (1.7" long), and 48 pcs of 3/32" (1.7" long), This heat shrink tubing kit includes five diameters, each in six colors (black, red, blue, yellow, green, white).