Use the 6-inch Nicolock Colonial Wall when you want to create large-scale walls and structures that still have a classic appearance. These solid retaining wall blocks have a double-sided, hard-split rock face texture. In addition to walls, you can build stairs, landings, fire pits, planters, and piers. These consistent and durable Colonial retaining wall blocks are made in the U.S. with a superior color blending technique. You’ll be able to create a structure that’s the right height, length and shape to bring your vision to life.