Protect your wires and connections with TechSpan Heat Shrink Tubing. This black tubing is designed for easy application and provides durable insulation. Sold in convenient 100-foot rolls, it's ideal for a wide range of electrical projects.This is TechSpan Heat Shrink Tubing with a black color. It features an expanded diameter of 1/16 inch and a recovered diameter of 1/32 inch. The tubing is rated for 125C and 600V, and meets UL224 VW1 and RSFR standards. It comes in rolls of 100 feet.