Usage and Product Size is shown in the drawing ,The clamp can be used repeatly,Give away the clip for guiding.Size 8mm clip has no spring and needs to be disassembled for use.If the spring falls off, reassemble and continue to use.Some size clips can be used interchangeablyThe color of clip is random.Material: PolyethyleneNotice:Please choose the size carefully, avoid being too big or too small. Use the clip for guiding to wrap wire. Cut off the rest after finish.Package included: Spiral Wrap Tube and ClipFeatures:Flexible and reusable. Can easily be cut off to the length you need.