Waterproof Heat Shrink Tubing Kit 365 pcs 3:1 Dual Wall Tube - Adhesive Lined Heatshrink for Wires - Marine Grade and Industria [3:1 Shrink Ratio & Fast Shrink] Shrink ratio of our industrial heat shrink tubing is 3:1, which makes a tightness seal. Shrinking temperature: 80 - 125 ℃, professional connections made in seconds [Adhesive Lined Heat Shrink Tubing] While heating, the adhesive lined comes out and sealing the connection, creating waterproof and long-lasting insulation [Dual Wall Tube & Safer] Outer wall provides abrasion resistance. Inner wall creates a waterproof seal and strain relief. The double thick polyolefin heatshrink tubing secures durable safe for projects [7 Sizes] The kit includes 7 most commonly used diameters ranging from 1/16 to 1/2 inch, and precut to 1.77" or 3.54" long. It fits for commonly used home wire connection gauge [Wide Applications] Our water tight heatshrink tube is idael for home, industrial, ship, automotive, weatherproof, rust and corrosion protection, solder joints, mobile charging cable, earphone, LED, RC aircraft, audio maintenance, and electrical DIY [ELECFUN Advantage] Our factory offer a great variety of colors and small and big sizes (e.g. 3/32", 1/8" ... 1.25",1.5",1.75", 2.5",3",3.5", and larger dia) rolls and kits. Supporting customized sizes, special usage tubing and high volume B2B purchasing _x000D_