Color-Pro Casting Resin (1 Gallon) Low Viscosity Casting Resin, Exhibits good impact resistance and strength. Semi-Clear and has an easy 1:1 mix ratio by Weight or Volume Color-Pro casting resin turns from liquid to solid in 15 minutes and works excellent in rtv silicone molds Color-Pro is semi-clear making it very easy to pigment. This is a for 1 Gallon. You will recieve 1/2 gallon of side "A" and 1/2 gallon of side "B"