Complete your retaining or freestanding wall project with Keystone’s premium wall cap units. The Keystone 4in Rec Cap in Graphite Blend (4 in. x 13.5 in. x 18 in.) adds a polished, professional finish to any wall, ensuring durability and seamless integration with 8-inch wall blocks. Key Features: Crisp, straight split face effectively showcases the Graphite Blend color within each unit. Install with advanced polymer construction adhesive for secure placement. Designed to complement 8-inch retaining wall blocks for seamless integration. Split on one face for maximum economy and versatility. Made of durable concrete with iron oxide pigments that resist fading in extended UV exposure. 48 pieces per pallet for efficient transport and storage. Product Code: 83178.GPHB Note: Product color, texture, and pattern may vary.