Ladbrooke Micro 20 Soil Block Maker - New Handle! Essential organic gardening tool. Makes 20 3/4" soil blocks for small seeds. Easy and fun to use. Part of the unique Ladbrooke nesting system of starting seeds. Sustainable product - reduces use of plastic for starting seeds. Micro 20 is best for starting small seeds, then soil blocks insert inside Mini 4 soil blocks. Made by Ladbrooke - maker of the highest quality products that will last for years!