Engineered to provide extra stability for the Post High mats. Each peg is designed to slide over the handles (see diagram). The flat-top design allows for easy setup, using your foot to secure each pegin place.
The different lengths provide the stability for the mats to sway slightly during ball and wind impact without securing permanently to surfaces like grass.
By attaching the string provided you will never have to remove the peg from the mat offering the convenience of using whenever desired.