Pre-Formed Faux Rock Pillars look like real stone yet are far more resistant to weather, simpler to install, cost less and are easier to maintain. Choose from two different patterns and sizes – River Rock (12” square) and Ledge Stone (21” square). Each can be used in many different applications. Here’s just some possible applications: Ornamental Fencing, Vinyl Fencing, Vinyl Railings, Ranch Railings, Aluminum Fences, Privacy Fences, Mail Box Posts, Lamp Posts, and Sign Pillars.