Each pebble is carefully selected and hand-sorted according to color, size and shape in order to ensure the highest quality pebble tile available. The stones are attached to a sturdy mesh backing using non-toxic, environmentally safe glue. Because of the unique pattern in which our tile is created they fit together seamlessly when installed so you canâ€TMt tell where one tile ends and the next begins! Usage: Suitable for interior and exterior use, walls, floors, showers, backsplashes and pools. Details: Stone size: Approx. 3/4 to 2-1/2 Thickness: Approx. 1/2 Dimensions per sheet: 4 High by 12 Wide Mounting: Mesh-backed