Heat Shrink Tubing Kit: Includes 6 sizes from 1/8 to 3/4 inch;our industrial heat shrink tubing is 3:1, which makes a tightness seal. Shrinking temperature: 80 - 125 , professional connections seconds. The plastic box includes 220 pcs of heat shrink tube in two colors (Black & Red) and 6 different specifications to meet your needs. The heat shrinkable tube has a diameter of 1/8inch, black & red 45 PCS; 3/16inch, black & red 25PCS; 1/4inch, black & red 15 PCS; 3/8inch, black & red 9 PCS; 1/2inch black & red 10PCS ; 3/4inch black & red 6PCS Waterproof Heat Shrink Tubing Kit 220 pcs, 3:1 Dual Wall Tube - Adhesive Lined Heatshrink for Wires - Marine Grade and Industrial Shrinkable Wiring Wrap Fully Insulation Black/Red, 6 Sizes Application: Heat shrink tubing is used for marine and automotive wiring, wire connections and DIY electrical wiring projects. Also ideal for home, industrial, ship, automotive, weatherproof, rust and protection, solder joints, mobile charging cable, earphone, LED, RC aircraft, audio maintenance, and electrical DIY The supplied adhesive coating provides a strong and seal that protects your wires from moisture, dirt and other external elements Different batches may have different printed labels, but it does not affect the use Color: As Shown Material: PE Package Contents: 1 x Heat Shrink Tubing Kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.