180 PCS Heat Shrink Tubing Kit - Black

3:1 SHRINK RATIO - Recovers to 1/3 of its original diameter, and makes a tight seal. Eliminates the problem of 2:1 tubing not shrinking tight enough.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 7 most commonly used diameters ranging from 3/32" 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.