NPT CBSFC618 6" x 18" x 6" Splitface 2 Piece Dog Ear Corner Coal Black. Whether creating a patio, a walkway, or a pool deck, NPT natural stone hardscapes are the perfect fit for your pool area. The coal black splitface corner tiles are textured and great for creating feature walls. Enjoy the essence of outdoor living by creating a space that invites you to spend time outdoors.