You are buying 2 plastic molds to cast these pavers..not the finished product itself. ALL OF OUR MOLDS COME WITH CEMENT RECIPES AND INSTRUCTIONS. 2 heavy duty plastic molds that each measure appx. 15 & 3/4" x 7 & 3/4" x 1.5" thick and make beautiful stones each and every time you cast them. Mix and match making your own creative design. You can make these for only pennies! Start making your own patio today. Molds will either be made from black ABS plastic or semi clear poly plastic.