SANDBLAST MASKS for Deep Carving in to Stone. 42 mil. This has the highest tack of any mask on the markert. Perfect for a types of stone surfaces. Can be used for Glass, Wood. Size is 15" x 30 ft long. You can piece together to create any number of sizes. From small stones to Large ones the blast mask will let you carve deep. It can be cut with the magnum Force cutter