Sufficient quantity: 10 pieces of 5 different sizes of wooden strips, sufficient quantity and size can well meet your different DIY needs. 5 different sizes: The wooden strips have 5 different sizes. The thicknesses are 3mm/0.11 inch, 5mm/0.19 inch, 7mm/0.27 inch, 10mm/0.39 inch, and 12mm/0.47 inch respectively. You can choose the appropriate size according to your own needs. Material: Our mud roller guide rail is made of high-quality wood, which is sturdy, reliable, and not easy to break. You can use it with confidence for a long time. How to use: You just need to place the mud roller guide rail on both sides of the clay to fix it. Then use a rolling pin to roll on top. You will get a flat and intact piece of clay. It can help you improve efficiency very well, and you can experience the fun of DIY from it. Widely applicable: These clay roller guides are very suitable for fixing clay when making handicrafts, which will make your clay smoother and smoother. They can be used in various clay works, such as carving, smoothing, etc. These mud roller guides can provide you with a more relaxed and enjoyable user experience.