Includes Resin, Hardener, 6 reusable Measure & Mix Cups and 3 Mixing Wands. Enough to mix 12 batches. Each batch will make 3-6 castings, or cover about 15 square inches with the Doming Technique. Mix in a 2-to-1 ratio. Shelf life about a year, and can be maximized by storing in a cool, dry place, away from light. Functional for years, but for top clarity, use before Part B starts to tint.