Soil Blocker "Nesting" Set - Mini 4, Micro 20, Cubic Inserts PLUS Bonus: 8 Qt Soil Block Mix - FREE SHIPPING! Soil Blocker "Nesting Set" includes Ladbrooke Micro 20, Mini 4, Set of 4 Cubic Inserts PLUS 8 Qt Green Planet Naturals Soil Block Mix. Ladbrooke Micro 20, Mini 4 and Set of 4 Cubic Inserts are made in the UK - original tools. 8 Qt Green Planet Naturals Soil Block Mix makes approximately 32 2" blocks, using the Mini 4. Perfect Starter Set or Gift Set for that special gardener in your life. Essential organic gardening product that is easy and fun to use.