Material: steel, which can be used repeatedly for a long time. It is recommended to wear gloves when using this kind of soil retaining device to prevent scratching your hands. Function: Get a set quickly. Just mix and wet your soil, press it with a soil blocking tool and put it in your seed tray, and then you get a 5cmx5cm cubic soil block. Note: This is a practical garden planting tool. Slight scratches when cutting steel not affect the use., Weight: 2.07014064018 pounds, Manufacturer: Awwertse