Package Included: The package includes 50 colonization sponges; each size: 50x30mm. Seedling Sponge: Suitable for flower seed nursery/vegetable seed nursery/central nursery; easy to manage/easy to move, transportation/removal without root damage, rapid growth/tidy seedlings, stable growth. Widely Used: Very suitable for cultivating 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. Multiple Functional: Each seedling sponge is cut into small paths to promote seed germination and hulling, and reduce workload under appropriate circumstances. High-quality Materials: The garden cloning collar is made of high-quality sponge, which is soft, , breathable, reusable and waterproof, ensuring the safety of plants.<br><br>size:50x30mm Material:sponge colour:White<br><br>Package Contents: 50 X hydroponics sponge<br><br>Only the above package content, other products are not included. Note: Light 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.