PREMIUM - Soil Blocker "8 Piece Deluxe Nesting" Set - Maxi, Mini 4, Micro 20, Cubic Inserts, 1" Seed Dibbles, Grow Tweezers + BONUS 12 Qt Soil Block Mix and 1 Qt Worm Castings! Soil Blockers are easy and fun to use. Environmentally friendly by reducing non-renewable plastics. Green Planet Naturals Soil Block Mix is great for use in all size soil block makers. Set comes with user instructions. The Micro 20 3/4" blocks "nest" into 2" Mini 4 blocks, which "nest" into 4" Maxi blocks. Set also includes set of Cubic Inserts, 1" Seed Dibbles, Grow Tweezers, 12 qt bag of Soil Block Mix and 1 Qt Worm Castings. Soil blockers are by Ladbrooke, makers of the highest quality products that will last for years!