74 PCS 1-1/2, 1-1/4, 1, 3/4, 1/2, 3/8, 1/4 Inch 3:1 Heat Shrink Tubing Dual Wall Adhesive Lined Marine Grade Electrical Cable Heat-Shrink Insulation

74 PCS 1-1/2, 1-1/4, 1, 3/4, 1/2, 3/8, 1/4 Inch 3:1 Heat Shrink Tubing Dual Wall Adhesive Lined Marine Grade Electrical Cable Heat-Shrink Insulation

3:1 SHRINK RATIO - It shrinks a lot, recovers to 1/3 of its original diameter, put it on crimped and uncrimped connections, after heat shrink, it makes a strong and tight seal. Prevents failure due to corrosion, vibration, abrasion and strain STURDY DUAL WALL ADHESIVE LINED CONSTRUCTION - The outer wall shrinks, providing strength, rigidity and abrasion resistance, while the inner wall provides a water-resistant seal to keep out contaminants and water. The glue inside it is stiff, strong and flexible, makes good bond to wires, and makes the wiring look clearn WIDE APPLICATIONS: Must have for DIY and Repair. The shrink tubes is mostly used for soldering and covering connections on amplifier, audio, battery, radio in car, truck, boat, jeep, soloar pannel and etc, used to seal butt connectors for in-line splices, insulate tool handles to reduce electric shock, repair welding cables and insulate electrical terminals stingers and copper lugs EASY TO USE - These heat shrink tubings are easy to use and can be shrunk in seconds. Simply cover the bare wire section with the heat shrink tubing and heat with a soldering iron or torch or other heat source PACKAGE INCLUDES - 7 Diameters 1.5 1.25 1 3/4 1/2 3/8 1/4 Inch, suitable for awg gauge 4/0 3/0 2/0 1/0 2 4 6 8 10 electrical cable wire lugs terminal connectors RockDIG 74Pcs Large Size 3:1 heat shrink tubings double wall adhesive lined 7 Diameters 1-1/2 1-1/4 1 3/4 1/2 3/8 1/4 Inch Black Red

Material: Polyolefin
Shrinkage ratio: 3: 1
Starting shrinkage temperature: ≥ 70 ℃
Full shrinkage temperature: ≥105 ℃
Operating temperature: -45 ℃ to 125 ℃
Tensile strength: 10.4Mpa
Dielectric strength: 15 kV / mm
Voltage: 600V
Flammability: Flame Retardant

Package Includes:
Φ1/4 inch - length 3", 20pcs (black - 10pcs, red - 10pcs)
Φ3/8 inch - length 3", 12pcs (black - 6pcs, red - 6pcs)
Φ1/2 inch - length 3", 12pcs (black - 6pcs, red - 6pcs)
Φ3/4 inch - length 3", 12pcs (black - 6pcs, red - 6pcs)
Φ1" inch- length 3", 6pcs (black - 3pcs, red - 3pcs)
Φ1-1/4" inch- length 3", 6pcs (black - 3pcs, red - 3pcs)
Φ1-1/2" inch - length 3", 6pcs (black - 3pcs, red - 3pcs)
Total quantity of heat shrink tubings: 74 pcs.
Plastic storage box - 1pcs.

How to use?
1. First choose the right size tubes, as it is 3:1 heat shrink ratio, it will shrink up to 1/3 of the original diameter. Pease measure and make sure the diameter of wire is equal or a bit larger than the size of tube after heat shrink.
2. Then insert the wires to the heat shrink tubing, use a heat guns to heat it until the wire is wrapped tightly.
3. Don't touch the tube until it cool completely.