With 400' of string in the caddy, the grounds crew can easily and accurately mark field foul lines for games or practice. The orange caddy has a comfortable hand grip inside, allowing it to easily spin when reeling out the white string. Simply unwind the string to the length needed, and use the ground pin that's at the end of the string to hold it in place to ensure lines are straight and accurate. Use the easy retrieval crank for quick wind up and storage. This is also a great tool for field maintenance and making sure edges are straight.