500Pcs 30x4mm PE Heat Shrink Tubing, Bettomshin 2:1 Black EVA Wire Shrink Wrap, Electrical Cable Wire Kit, Heat-Resisting(248°F±5) Insulation Protection（≥600V） fit 2.1～3.6mm Dia Wire

The maximum diameter of the cable shall be less than the diameter of PE heat shrinkable tube (also not too small) The diameter of heat shrinkable tube shall be ≈ the diameter of cable How to use 1.

Intercept the required length 2.

Put the power cord into the heat shrinkable tube 3.

Heat the surface of the shrink tube with high temperature and uniform heat (Note: do not burn in a certain place all the time) 4.

Wait for cooling It is mainly used for adding protective insulation layer to wires and cables.