This set of 5 craters is by far the best value out there. Craters are a good size to provide a meaningful piece of terrain for your battlefield. I use them for Warhammer 40K, and you really only need 2-3 (along with a mix of other pieces) for a very solid board. They are vacuum formed, so I imagine would be prone to damage if abused. I intend to fill the backside with insulation foam (the expandable kind from a spray can) for added stability and mount on foam core board for painting with some gravel/tile grout for flavor. Recommend to any 40K player who wants a home board for a good price.