Multiple Functions: Each nursery sponge is cut into 8 lanes to facilitate seed germination and shell breaking, and it can reduce the workload in suitable occasions. High-quality Materials: Made of high-quality sponges, the garden clone collars are soft, and breathable, reusable and waterproof, ensuring the safety of plants. Perfect Size: Each package includes 40 garden clone collars. 2 inches in diameter and 0.75 inches thick. It fits perfectly in 2 inch net cups. Seed Nursery: Suitable for flower seed nursery/vegetable seed nursery/concentrated nursery is easy to manage/easy to move and port/removal does not hurt the root, fast growth / Seedling neat, consistent growth. Widely Used: Very suitable for germination of hydroponic plants in DIY nursery boxes and cloning machines. Whether you are using a commercial cloning machine or a dedicated nursery box, this is the for plant germination. Specification: Name: Vegetable Planting Sponge Block Garden Clone Collars Function: used for seed germination, hydroponic plant planting, hydroponic vegetable planting cotton Size: 48mm x 19mm Material: EVA colour: black Package Contents: 40 x Planting sponge Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.