These are perfect for rounded stoops, steps or thickened edges to a slab, curved flat work. They are specially formulated to be extremely durable and weather / chemical resistant. Not all plastics are (most get weak and break or crack). The forms can be cut with an ordinary wood blade. They can be secured with wood or metal stakes. The forms can nailed through or screwed. Joining of two forms to create a longer piece can be accomplished by cutting a small portion of form and screwing it to the back of the longer lengths to act as a joining plate. Easy stripping - Stronger than masonite- doesn't kink like steel - long lasting and inexpensive. Set Includes: 6 pieces, 8' each, total 48'.