Considering the price per foot, this is a pretty good deal. Ten colors help you organize your wiring and The two colors, red and black, occur twice as often as the others, which makes sense since they are used so often, on the chassis before the board is attached, or between parts that move in use. 24 Diameter is a pretty good size for low voltage and low current like audio and logic PVC insulation shrinks fairly quickly from heat I'm writing a review the two sellers selling it are asking a higher price than I've seen elsewhere ltex dot com has it for nine, and even the local all you do electronics has it for ten.