The Keystone KeySteel® System is a high performance retaining wall system constructed with the durable and aesthetic KeySteel segmental block and KeyStrip inextensible (steel) soil reinforcement. KeySteel® System combines the ease of construction of a segmental block retaining wall system with the performance of a traditional large panel MSE retaining wall; resulting in an extremely stable, aesthetically appealing and cost-effective retaining wall structure. KeySteel® System was designed specifically for use with highway and heavy construction projects.