Laser cut 1/2 or 3/8 inch thick, 3 inch x 3 inch hydraulic press dies for jewelry making. Custom made of clear polycarbonate, stronger than acrylic. Set of three sizes, approximately 32mm, 25mm and 16mm on a side. Requires rubber sheeting (sold separately) for forming metal. Does not require a hydraulic press- a vise (or heavy hammer) and two bench blocks may be used.