This set of heat shrink tubing is crafted from durable Polyolefin, featuring a shrinkage ratio of 2:1, meaning it will reduce to half its original diameter when heated. 

Perfect for various applications including electrical insulation, wire bundling, color coding, mechanical protection, cable joints, and everyday repairs. 

It comprises 560 pieces of assorted tubes neatly organized in a plastic box, available in five vibrant colors: Yellow, Blue, Black, Green, and Red. 

With 12 different specifications, ranging in length from 45mm and internal diameters from 1mm to 13mm, ensuring versatility to meet your diverse needs. 

Each tube ensures a snug fit with a shrinking ratio of 2:1. The package includes 1 set of 560PCS (12 sizes) 2:1 Heat Shrink Tubing.