Description: Matrix moisture, air balance, promote seed germination, promote root development. Easy to transplant, biodegradable & do not damage the roots. Easy to use & keep the planting environment clean. Specifications: Material: Nursery peat, Non-woven, Polymeric fiber. Application: Planting, Nursery. Diameter: 30mm Expansion time: 3-5min Package Included :10 x Honana HG-GT10 Nursery Block