106-piece weather-resistant and waterproof assortment of heat shrink tubing for demanding applications Includes black and red colors in 1/8", 3/16", 1/4", 5/16", 3/8" and 1/2" diameters 3:1 shrink ratio with a maximum electrical rating of 600 volts Includes convenient resealable plastic case. HEAT SHRINK TUBE KT 106PC