【4:1 RATIO RAISE EFFICIENCY】: Heat-shrink tubing 4:1 it will rapid contraction to 25% of original diameter. Can covers irregular shapes and more tight fit oddly-shaped items than 2:1 ratio tubing. 【ADHESIVE LINED&DUAL WALL】: Shrink sleeve with hot melt adhesive on the inner wall that achieve better waterproof and insulating Sealing effects.Dual wall increased mechanical protection strength. 【HIGH PRACTICABILITY AND PROTECTION 】: 4 to 1 Heat shrink increased ability to stand up to wear and tear while maintaining flexibility. Easy to use large diameter wires repairing and simplifies cable repair without risk of electrocution. 【PE HIGH ELASTIC MATERIAL】: Waterproof heat shrink tube is made from polyolefin has passed UL and CSA certification, meets RoHS requirements, which has the advantages of good electrical insulation,flame Retardant, oil-proof etc.
