Woodland Scenics 1201 Lightweight Hydrocal

Lightweight Hydrocal Plaster-1/2 Gallon - Dry Lightweight Hydrocal has been specially formulated for terrain model builders. It is half the weight of Hydrocal and goes twice as far. It is the tough, quick-setting product you will prefer. Use it for casting rocks, creating a hard shell terrain, filling in around castings and as an adhesive.