Heat shrink is the duct tape of electronics which I guess makes this heat shrink the colourful and exciting duct tape they sell at craft stores. This heat shrink comes in six different colours - red, blue, green, yellow, white and the traditional black.
Each pack contains ten 6" pieces of the following sizes: 3/32", 1/8", and 3/16". You get three of each in black and red, and one of each in green, blue, white, and yellow. It's a nice colourful mixed bag of heat shrink!
Heat shrink keeps your stuff all safe and kept together. Especially when wiring and soldering, use heat shrink to add mechanical strength to cables. We use this stuff all the time and having a zip-lock bag of all the possible sizes is super handy. The colours can be used to colour code different wires so you know which wire is power, data, ground, analog in, etc.