AlturnaMATS® Ground Protection Mats virtually eliminate equipment becoming stuck or causing rut damage. Constructed of 0.5? thick engineered high-density plastic, AlturnaMATS ground mats are an ideal solution to the expensive problem of repeatedly replacing expensive plywood sheets or repairing ruts. Constructed of solid steel and measuring 3.0? long, Handi-Hooks provide a safe and efficient way to move your plastic construction mats.