"Clip on tarp pull outs. These have a unique design with an o-ring around the doughnut making it gentle on your tarp and tacky on silicone nylon. Because of its very unique design, the more it is pulled – the tighter the grip is on your tarp. Install in seconds, yet they are completely removable. 
 
They come with 10ft of 3/32″ shock cord on each tarp pull out and will open your tarp up and give you more room inside. They are great for pulling out your tarp for bridge hammock so your pole doesn’t pierce your tarp. 
 
Designed and produced in the USA by Tato Gear"
 
The above wording is straight from Dutch, and his team.​​​​​​​