The Pros Kit hook and loop cable ties are made from Nylon/P.P. material and come in a 5 colour combination pack (Black, Blue, Green, Red, and Yellow). They are good for use in binding the cables and patch cables and won't even affect the transmittance performance because of the too tight binding. Reusable, the back-to-back design provides instant installation without the use of tools. 15 coloured ties per pack.