72 Sets Rockwool Cubes and Net Pots, 1 Inch Rock Wool Planting Cubes High Germination Rates Strong Air Permeability Even Texture with Net Pots for Hydroponics

Premium Material: Our rockwool cubes are made of premium basaltock inorganic fiber, and compressed into blocks through proprietary process. It's soft and even texture, water absorption and strong permeability, which is the best substrate material for soilless cultivation