Description 1. **OPTIMAL CROP HEALTH**: Crafted from 100% genuine rockwool, derived from natural basalt rock fibers, these cubes are designed to support robust root development and efficient plant growth by ensuring a disease-free and sterile environment, essential for vibrant and high-yielding hydroponic crops. 2.: **PRECISE SIZE FOR PERFECT FIT**: Each block measures a uniform 25x25x25mm (approx. 0.98x0.98x0.98"), making them an ideal fit for standard hydroponic systems. The sheet itself spans 13cm x 27cm x 2.5cm (5.11x10.63x0.98"), offering a seamless integration into your current gardening setup without the need for additional adjustments. 3. MAXIMIZED ABSORPTION AND AERATION: The engineered fiber density and structure ensure rapid water absorption and exceptional nutrient solution retention. Concurrently, it maintains a perfect balance with pockets, guaranteeing ample oxygen reaches the roots to prevent rot and optimize nutrient for faster, healthier growth. 4. : **EASY TRANSPLANTING FOR STRESS-FREE GROWTH**: Simplify your gardening process. Whether moving seedlings into larger rockwool blocks, or directly into net pots, these cubes are designed to minimize root disturbance. Simply transplant the entire cube, ensuring a low-stress transition for your plants and consistent, vigorous development. 5. **COMPLETE SEED STARTING VALUE PACK**: Get a great start on your indoor garden with this value-packed set. Included is one full sheet, featuring 50 individual starter cubes with convenient pre-drilled holes, providing you with everything necessary to cultivate a thriving crop from the very beginning. Package list 1*one pack of seedling starter cubes(50pcs)