Fast cast is a two-component urethane casting resin, which turns white once set. Easy to use, 1:1 ratio and is odorless. Ideal for casting, prototyping, miniatures, models, taxidermy and more. Fast cast sets to a hard cast in approximately 10 minutes at 70 degrees Fahrenheit. Once cured, Fast Cast can be drilled, sanded, shaped and painted. It can also be colored with cast in' craft opaque pigments and transparent dyes. Kit contains 16 oz. Part a & 16 oz. Part B (32 oz. Total).