This product is a clay tools set, which is made of acrylic material, and durable. It is great for clay making and DIY. Easy to use and operate, which is suitable for professional and personal to use. 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. - The backing boards are durable and practical, which can serve you for a long time. - Combination of backing boards and clay rolling stick to meet your different needs. - With this clay tools set, you can enjoy the joy of DIY clay handicrafts. - Compact and lightweight, easy to store, these clay tools are not taking up space. - Smooth surface without burrs, these clay hand tools are safe and secure to use. Package list: 2 x U Shape Backing Board 2 x Rectangle Backing Board 2 x Square Backing Board 2 x Clay Rolling Stick