Big Marble Jumbo Wedge spacers are designed to be used in any type of stone or tile installation. They are designed to be cut to the appropriate thickness that is required for vertical applications to align properly. So if you need a little more space for proper alignment, then cut the wedge so that its thick, and if you require a small amount of space, cut the wedge so that its thin. The original shape of the spacer gives you unlimited flexibility in spacing when cut to size. When done, you can clean off the spacers and throw them back in the jar for the next job. These wedges are made in the USA with recycled materials, and will last a very long time.