Flagstack® is an authentic looking, versatile and easy to use landscape wall system that offers the appearance and character of a natural drystacked wall. Perfect for seat and garden walls, pillars, planters, tree-rings, fire pits, grill islands and BBQ's Integrates true-life flagstone textures on both the front and back of the units to ensure an authentic appearance Lightweight blocks for ease of use No pins or clips allow for effortless installation for the professional landscaper or the Do-It-Yourselfer The uniquely engineered S shape design interlocks to create a 3D Shear Matrix (front to back, side to side & vertically) for added strength, stability and longevity Ideal for garden and seat walls up to 2ft (0.61m) in height, or higher retaining walls, when incorporating geogrid. A pallet of Flagstack long corners contains 140 units. A pallet of Flagstack jumpers contains 5 layers. A pallet of Flagstack long caps contains 60 units. A pallet of Flagstack tapered caps contains 120 units.