Description: This package includes totally 37 pieces in this combination set, convenient to use, meeting your various needs in daily life. The clay rollers and backing board are made of acrylic, with a smooth and non-stick surface, easy to clean, the clear color will not obstruct your view when you roll clay into the sheet. Acrylic clay sheet:The clear acrylic sheets are in rectangle and square shape, with a protective cover to prevent scratches, convenient to store. Clay needle and knife: Soft handle and pointed needle, great for small detail work, which can be easily applied to cut heavy clay strips, make holes in clay or draw design; Clay knife with non-slip handle, which will make the cutting operation much safer and more convenient. This clay tools set is easy to use and clean, the acrylic roller can adjust clay's shape or thickness, polymer clay blade can make curved in polymer clay, and the acrylic sheets are designed for backing board or pressing clay into other shapes, coming with scraper to assist your clay engineering, allowing you to enjoy the fun of DIY at home or school. Specification: Material: Acrylic, Plastic, Stainless Steel Size Chart: Acrylic board size: 15 x 10 cm/5.9 x 3.9 inches Acrylic clay drum size: 20 cm/7.8 inches Clay blade size: 19.81cm/7.8 inches (long), 9.91cm/3.9 inches (short) Plastic scraper size: 12.21x5.84cm/5.2 x 2.3 inches. 8 Mini round trowels diameters:0.1cm/0.04inch, 0.12cm/0.05inch, 0.15cm/0.60inch, 0.23cm/0.09inch, 0.35cm/0.14inch, 0.58cm/0.23inch, 0.83cm/0.33inch, 1.03cm/0.41inch. Package Includes: 37Pieces/Set Pottery Auxiliary Tools Note: Please allow 1-3mm measuring deviation due to manual measurement. Due to the different monitor and light effect,the actual color of the item might be slightly different from the color showed on the pictures.Thank you!