Grodan Starter Mini-Blocks - 2 x 2 x 1.5 inches - Case of 1440 blocks. These Grodan Rockwool Mini-Blocks sit in a tray (flat) without support for easy starting of seeds and cuttings. The Starter Mini-Blocks are individually wrapped in white plastic to minimize algae growth. Remove wrapping and transplant into any loose media such as Grow-Cubes or coconut fiber or leave wrapping on and set on top of a larger Gro-Block. Packed in easy to tear away strips, labeled with instructions. Case consists of 60 packs. Each Pack contains 24 blocks.