If you are looking for a pottery modeling tool set, you should take at this item. It is made of , which enjoys strong durability. It can greatly meet your practical requirement, can be used for pottery and clay . Features - Color: Transparent. - Material: Acrylic. - U Shape Backing Board Size: Approx. 17 x 0.2 cm / 6.69 x 4.33 x 0.07 inch. - Rectangle Backing Board Size: Approx. 10 x 15 cm / 3.93 x 5.9 inch. - Square Backing Board Size: Approx. 10 x 10 cm / 3.93 x 3.93 inch. - Clay Roller Size: Approx. 20 cm / 7.87 x 0.78 inch. - A great must-have clay modeling and shaping tool everyday usage. - The clay roller can be used for backing board or pressing clay into other shapes. - Great for changing the shape of clay, which can help you a lot for your DIY clay making. - Essential moulding clay tools for beginners and experienced people. - It's really a good way to develop and improve your patience, attention, hands-on ability and so on. Package list: 1 x U Shape Backing Board 1 x Rectangle Backing Board 1 x Square Backing Board 1 x Solid Clay Roller 1 x Hollow Clay Roller