Description: 100% brand new and high quality Features: Made from molten rock spun into cotton candy-like fibers and then compressed into cubes. Improved homogeneity, and optimum robustness and flexibility. Clean and eco-friendly, easy to use, ventilate, and ideal air water balance. Retains water yet provides good aeration for healthy root growth. Great choice for soilless planting. Specifications: Material: Molten Rock Color: As pictures shown Model: A#1.0in, B#1.5in, C#2.0in Size: A# app. 2.5cmx4.0cm/0.98inx1.57in B# app. 3.6cmx4.0cm/1.42inx1.57in C# app. 5.0cmx5.0cm/1.97inx1.97in Quantity: 1 Pc Instructions: Preparing and planting in rockwool cubes. Soak in water for 2 minutes. Take out from the water and place for about 15minutes. Put seeds into the hole of cubes. Spray water after seed inserted. Place it in a seed tray. Note: No retail package. Transition: 1cm=10mm=0.39inch Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Rockwool cube only, other accessories in the picture are not included. Package includes: 1 x Rockwool Cube