Material: Made of Polyolefin, Shrinkage Ratio: 2:1 (Will shrink to 1/2 its supplied diameter).
Suitable for electrical insulation, wire bundling, color coding, mechanical protection, wire/cable joints and daily repairs, etc.
Comes with 530pcs heat shrink tube assorted in a plastic box, 5 colors (Yellow, Blue, Black, Green, Red), 12 Specifications, satisfied for your different need.