Each set including 4pcs of male molds and 8 pcs of female molds, used to produce 406mm x 406mm x 20mm Faux Stone Rubber Tiles, the thickness of the rubber ramps are not adjustable). ---Installed on 450mm x 450mm, 4-layer rubber tile molding machine to make 406mm x 406mm rubber tiles as below sketch. Each time can make 4pcs.