6” x 6” x 6” Cultilene Rockwool Cubes (48pk)Achieving consistent root growth becomes a breeze with the cultilene rockwool cubes. The cube measures 6 X 6 X 6, and it can maintain a balance between water, air while encouraging faster growth in the initial stages. Growers achieve stronger roots due to their unique fiber structure that creates less resistance for root growth. Cubes get rid of the excess water, therefore, allowing better aeration and root growth stimulation. Most Trusted: You can