Professional grade rubber mold that will last for hundreds of pours, created from natural stone to reproduce the natural stone's finest details Made in the USA from plastisol rubber, including recycled plastisol No release agent necessary, saving you money, time, and clean up, as well as easy, clean release of face color pigments, unlike plastic molds EZ Stack stones are made in 3 widths for easy installation, with unique stones in each of the 3 versions available for purchase, no stone repeats Matching EZ Stack flat stone molds are also available Stone Master Mold's EZ Stack corner molds are designed to complement the matching EZ Stack flat stone molds. EZ Stack stone comes in 3 widths of 4.5", 3", 1.5" for quick and easy installation. The finished product/stone is approximately 1-1.75" thick. Each mold makes approximately 1.5 linear feet drystacked and 1.75 linear feet with a grout joint. Stone Master's rubber molds are made from plastisol, which requires no release agent and will last for hundreds of pours. This mold includes recycled plastisol. Made in the USA, both materials and labor. Available in 3 unique version, with no stone repeats. A corner plug can be used (sold separately) for 1-step corners. 1-step corners allow you to pour the corners in one step: Pour the long, horizontal end first, place the plug on the mold, then fill the open, short end and lightly vibrate.