Concrete Stamp Mats. Random Stones Stamped concrete SM 1903/2 Rigid Concrete Stamp Mats. Random Stones Stamped concrete SM 1903/2 Rigid Stamp size: 29"x 29" x 1" (74 X 74 cm) approximately We recommend use Stamped Concrete Liquid Release (Available in 1 Gal and 5 Gal) or Color Powder Concrete Release Agent ALL TAXES, DUTIES AND LOCAL FEES AT THE DESTINATION COUNTRY WILL BE PAID BY BUYER. OUR SHIPPING COST INCLUDES DELIVERY TO A DESTINATION ADDRESS ONLY. ALL GLOBMARBLE PRODUCTS ARE SHIPPED FROM THE UNITED STATES