This stackable retaining wall block is ideal for mortar-free walls. It can be used to create planters, garden borders, tree rings, and small retaining walls. The recommended maximum wall height is 2 Ft. The block is made of concrete and has a trapezoid shape. It is 12 inches long, 10 inches wide, and 4 inches high. It weighs 24 Lbs. The block has a beveled face and a red finish.