Castin' Craft Opaque Pigments from ETI are a fun and easy way to add color to your casting projects. The 1 oz bottle in blue has a drop dispenser allowing for precise color measurement. Blend with Castin' Craft Transparent Dyes to create secondary colors and unique effects for a one-of-a kind piece. These opaque pigments are perfect for any DIYer looking to make their own jewelry, paperweights, kitchen or bathroom knobs as well as other molding and casting projects.