Wooden wedges shall be cut diagonally with a large head and tapering point at the end. Wooden wedges to fasten erosion mats shall be 1"x1.25"x 12". Wooden wedges to fasten coir wattles and coir rolls shall be 15"x2"x18", 1.5"x2"x24", and 2"x4"x36" or 2"x4"x48". These wedges shall come with a drilled hole near the top of diagonal side to fasten a nail. Take this out.