4:1 Ratio Heat Shrink Tubing 1 inch 12FT - Marine Grade Wire Wrap Shrink Tubing Adhesive Insulation Seal

【4:1 RAPID CONTRACTION】4:1 shrink tubing-Highest shrinkage ratio. it will shrink to 1/4 of its original diameter, more tightly than 2:1 ratio tubing ,used in more applications. 

【ADHESIVE LINED&DUAL WALL】Black Heat Shrink Tubing with excellent electrical insulation and mechanical protection and inner wall adhesive liner that provides a permanent, waterproof and seal.Dual wall increased ability to stand up to wear and tear. 

【HIGH PROTECTION AND EASY TO USE】 : 4 to 1 heat shrink can covers even irregular shapes and tight fit oddly-shaped items,protect it from abrasions and after shrinking that it will addition stiffness provide tough protective cover .while maintaining flexibility easy to use. 

【PE HIGH ELASTIC MATERIAL】: Waterproof heat shrink tube has passed UL and CSA certification, meets RoHS requirements, which has the advantages of good electrical insulation,Flame Retardant,oil-proof etc.