Hydrocal quick setting white plaster. Full strength gypsum plaster is not cut with cheap plaster fillers. Designed for strength and casting detail. Accepts liquid or crystal pigment colors and stains. Packed in water tight bag, not a leaky carton. Great for model railroads scenery and school project dioramas. Not for body casting. Distributed by Capital Ceramics. Now packed in resealable bag in a sturdy box. Great for fantasy gamers, model builders, model railroaders and anyone making castings.