2 Sizes Clay Depth Guides: package includes 8pcs(4 pairs) roller fepth guides in 2 sizes--L x W 18x2cm(7"x0.7"), thickness 3mm and 5mm; each size 4pcs. You can choose appropriate size according to your needs. Easy to Use: place the pottery clay rolling guide sticks on the sides of the clay, secure the clay, and then use a clay rolling pin to roll the clay, and you will get a flat piece of clay with even thickness, don't need a pasta machine. Quality Material: the polymer clay depth guides are made of acrylic, strong and reliable, no dents or deformations even after many presses, the exterior is smooth and burr-free, comfortable to the hand, easy to clean. Portable Ceramic Tools: each clay depth guide is designed with a pre-punched hole for easy storage, you can hang the rolling pin tools on your perfboard, perfect for crafting lovers, pottery lovers and novice craftsmen. Wide Applications: the roller depth guides are perfect for artistic creations in pottery, can be used for making ceramics, statues, ornaments, fondant, earrings, pendants, jewelry, handmade crafts, etc.