The Volleyball Marker Set features large, 3/4" circumference, low-stretch polypropylene rope with net positioning mid-point markers. The Volleyball Marker Set also includes strong, welded, nickel-plated corner rings to facilitate fast and easy, tangle-free court layout. The layout set is designed to accommodate the official 30' x 60' court size and also features a handy, practical re-winder for storage.