We produce aggregates for our key customers, O Thronas Concrete and Grace Pacific Corp, as well as for many valued contractor and homeowner customers. We supply ASTM, Hawaii State, and Kauai County specified rock materials, and we will gladly produce custom products to any size or specification. We have supplied quality aggregates for many large projects on Kauai, government and private, and for all sizes of homeowner projects as well.. Spee & Custom Products,Clean Natural Sand