· 🌱 QUALITY STARTER TRAYS - Sturdy, BPA-free plastic material to ensure 100% durability and long-lasting use. Made in S. Korea under strict adherence.· 🌱 IMPROVED OCTAGONAL CELL – Each cell has eight side and is designed to improve Seedling growth. The bottom hole drains excess water, provides aeration and proper circulation for healthy root growth.· 🌱 CAPACITY – Each cell is 1.75” (45 mm) wide and 1.75” (44 mm) high with 4 four drain canal leading to drain hole. For great seedlings, you can use 3.5 cm sleeved Coir disc or 3 cm sleeveless coir discs. The cell can hold 2 Oz of Coco Coir. Coco Coir has become the growing medium of choice for Professional growers and hydroponic growers.· 🌱 EASE OF TRANSPLANT – Use 3.5 cm sleeved discs will enable ease of transplanting the seedlings to larger pots or to the ground. Each tray has 50 cells· 🌱 VALUE PROPOSITION – Our trays are of high quality, can be rinsed off and dried and stacked for use again.