【Package Content of Shrink Tubing】355pcs (9 sizes) heat shrink tubing kit, wire shrink wrap tubing of black and red colors(half-and-half), 9 different most commonly used sizes meet your different needs, this wiring heatshrink terminals kit are ideal for connecting various wires and cables. 3/32"(80pcs), 1/8"(120pcs), 3/16"(60pcs), 1/4"(40pcs), 5/16"(15pcs), 3/8"(10pcs), 1/2"(10pcs), 5/8"(10pcs), 3/4"(10pcs). 【3:1 Shrink Ratio and Adhesive Lined】Twippo waterproof heat shrink tubing for hoses has a unique double wall design, 3:1 shrink ratio of these heat shrink wire tubing terminals has a thermal activated sealant lining, providing a 360-degree safety seal, eliminates the problem of 2:1 tubing not shrinking tight enough. When the heat shrink wire connectors are heated by heat gun, the adhesive melts and the heat shrink tube is sealed all the way to the end of the heat shrink tape, so these heat shrink tubing have good waterproof performance. 【3.15" Length of Heat Shrink Kit】Twippo wire heat shrink tubing are made of high quality polyolefin to ensure high chemical stability, good electrical insulation, good sealing, and safe. We offer a length of 80mm(3.15"), longer than others, to achieve more possibilities for work. Get to know our shrink tubing for wires, perfect heat shrink tube kit. 【Widely Applications of Shrink Wrap】Marine heat shrink tubing can be used in marine and automotive wiring, are great for hoses, car, motorcycle, truck, boat, solar panels, mower and audio stereo etc., our large size heat shrink tubing also applicable to industrial cables, these marine grade heat shrink tubing can provides greater pull strength, believe that our heat shrink electrical connectors kit can give you a great help, DIY automotive tools and other more. 【Service of Heat Shrink Tube】If you have any dissatisfaction with the heat shrink wrap or the size of shrink tube for wires, we can offer you 365 days payment refund guarantee, and give you a refund for electrical shrink tubing. Sincerely wish you a happy shopping! Twippo Heat Shrink Tubing Kit 355pcs - 3:1 Adhesive Lined - Electrical Waterproof Industrial Heat Shrink Tape Terminals- Marine Grade Wire Connector Shrink Wrap Tube - 3.15" Length - Black and Red