You can use this tool set with coin ring reduction dies to fold coins with holes from 1/4" inch (0.25") to 3/4"" inch (0.75"). Included in this set: 1/4" inch hole tapered folding cone 1/2" inch hole tapered folding cone 5/8" inch hole tapered folding cone 3/4" inch hole tapered folding cone Designed for use in your ring sizing machine, as well as in a hydraulic press or arbor press. And remember to always anneal your coins during the folding process. WARNING! This product contains small parts and can present a choking hazard to children. KEEP AWAY FROM CHILDREN! Returns accepted as long as the item is NOT damaged in the original condition, buyers pays return shipping.