Heat Shrink Tubing Kit - 4:1 Shrink Ratio - Resistant Shrink Tubing

4:1 SHRINK RATIO - Recovers to 1/4 of its original diameter, and makes a tight seal. Highest heat shrink ratio on the market.GLUE INSIDE - When heat is applied, adhesive comes out and seals the connection, creating a resistant and long-lasting insulation.VARIETY OF SIZES - We have included 5 most commonly used diameters ranging from 1/4" to 3/4". Shrink tubing is precut to 3.5 inches.EASY TO USE - Simply slide heat shrink tube over your connection point and apply heat. Professional connections made in seconds.DUAL WALL TUBING - Outer wall provides abrasion resistance. Inner wall creates a resistant seal and strain relief.