It is widely used in wire connection, insulation protection of solder joints, wire end treatment resistance, capacitor insulation protection, wire marking and end metal pipes, rods, rust and corrosion protection, antenna protection. They has good electrical insulation, great tightness, corrosion resistance and high temperature resistance. There are 8 specifications, which can meet your different needs. Made of high quality material, it is durable, insulated and easy to use. Item Name: Heat Shrinkable Tube Material: PE, Polyolefin Quantity: 164Pcs Features: Durable, Corrosion Resistance, Insulated, Colorful Notes: The quantity is about 164pcs, due to manual calculation, the quantity might has 1-5pcs more or less, hope you can understand, thank you. Due to the light and screen setting difference, the items color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 3 x 60 x 1.0 x 40mm Heat Shrinkable Tube (Yellow, Black, Red, Green) 30 x 2.0 x 40mm Heat Shrinkable Tube (Yellow, Black, Red, Blue) 16 x 3.0 x 40mm Heat Shrinkable Tube (Yellow, Black, Red, Green) 16 x 4.0 x 40mm Heat Shrinkable Tube (Yellow, Black, Red, Blue) 16 x 6.0 x 40mm Heat Shrinkable Tube (Yellow, Black, Red, Green) 10 x 8.0 x 80mm Heat Shrinkable Tube (Yellow, Black, Red, Blue) 8 x 10.0 x 80mm Heat Shrinkable Tube (Yellow, Black, Red, Green) 8 x 14.0 x 80mm Heat Shrinkable Tube (Yellow, Black, Red, Blue)