ENVIRONMENTAL TECHNOLOGIES-Castin' Craft Clear Polyester Casting Resin. Embed or encase almost any object in crystal clear plastic. Coins; shells; rocks; dried flowers; butterflies; insects and much more. The convenient package includes catalyst in a clear bubble top cap for convenience. Ideal for larger casts just mix and mold. This package contains one 16oz/473ml can with complete instruction for use and care. Contents conform to ASTM D4236. Made in USA.