Simplify your wiring setup with the DuBro DUB938 1/8" Heat Shrink Tubing Set. This set features black tubing for negative connections and red for positive, with each piece capable of shrinking to half its original diameter for a secure fit. Suitable for a range of electrical applications, this set includes four 1.5-inch long red tubes and four 1.5-inch long black tubes with a diameter of 0.1875 inches.