The Chooch Enterprises Flexible Clamshell Cobblestone Road Sheet is hand cast in super-detailed flexible vinyl. The "clamshell" name comes from the arched shape of the paving stone arrangement. Easy to install, each pack comes with a peel and stick permanent adhesive, which adheres to any flat, smooth surface. Thin material is easy to cut with a No. 11 blade or scissors. Paver sheets are painted in a base wash of color. Use the sheets right out of the package or paint with water-based acrylics. Each sheet measures 3-3/4 x 12" 9.5 x 30.5cm. Three sizes of sheets are available with this texture: Small for N and HO Scales; Medium for HO Scale; and Large for HO, S and O Scales. Flexible Clamshell Cobblestone Road Sheet are part of the extensive line of Chooch flexible walls and paving sheets.