Introducing the XerXes 1"X1" Sheet of Rockwool Starter Cubes, available in 100, 200, and 500 cube sets. These cubes are made of high-quality rockwool/stonewool and are perfect for starting seeds and cuttings in hydroponic or soil systems. The cubes come in a cube form and are suitable for use in various growing media. The brand is XerXes and the product is a custom bundle with no additional features. This product falls under the categories of Growing Media, Hydroponics, Yard, Garden & Outdoor Living, and Home & Garden.