This Black Twine from BSN Sports gives you a 500 spool that you can work with for your various projects. It is made from a poly material and is black around a white spool. This poly twine can be used to tie together tennis nets or for simple jobs around the house. For DIY projects you can use it to weave your own nets for backyard sports throughout the year. Whether you need to secure a net or stand for volleyball or t-ball you can use it for general tying purposes.