Material: Durable stainless steel, can be used repeatedly for a long time. We provide 3 months quality warranty. It is recommended to wear gloves when using this soil blocker to avoid scratches. Function: Quickly get a set of 4 pieces of 2 inch soil blocks. Just mix and wet your soil, use the soil blocker tool to compactly press and put in your seed tray and you’ll get 2" x 2" soil cubes > The soil blocking tool kit contains: 1 sowing machine + 4 pins of 2.1 x 1.1 cm + 4 pins of 1.1 x 1 cm + 4 pins of 2.66 x 0 .66 cm. Note: This is a practical garden planting tool. Slight scratches produced when cutting steel will not affect the use of the floor block. Satisfaction: If you are not satisfied or have any suggestions for our products, please contact us, we provide refund or replacement. We are constantly improving this product.