The WRJCC8000200010030J1 Heat Shrink Sleeve with Glueless 4: 1 Ratio; 8mm Length and 1 Meter Length, Yellow Color, is a Polyolefine manufactured product by Radpol. It is designed to reduce the diameter of a component part and protect against water, dust, moisture, chemicals, solvents, and abrasion. Heat shrink sleeve also has excellent flame retardant properties, making this an ideal product for wiring harness applications.