The Impact Seal Self Healing Lone Prairie Dog Target is constructed of technologically advanced material. When struck, the bullet passes through the self healing target material with minimal damage and visually nothing more than a pin prick. The hole actually closes itself back up re-sealing the target. This material is rugged enough to handle the repeated punishment from all calibers .22 Rimfire all the way up to the mighty 50 BMG. In addition to this self healing design and the 8 Prairie Dog Shape, the target stand is easily 2-3 times thicker and sturdier than that of any comparable targets. This stand simply sticks into the ground offering all day durability and stability. These durable targets are built for long life taking 2000-3000 rounds before needing to be replaced. With its great design added to the fact that it can take almost any round out there it only leads to years of enjoyment and countless hours of shooting fun.