Fabri-Cast 50 Polyurethane Casting Resin (2 Gallons) Ultra-Low Viscosity Casting Resin, Exhibits good impact resistance and strength. Bright White & has an easy 1:1 mix ratio by Weight / Volume Fabri-Cast casting resin turns from liquid to solid in 15 minutes and works excellent in rtv silicone molds Same Day Shipping This is a for 2 Gallons. You will receive 1 gallon of side "A" & 1 gallon of side "B"