Package:A Set of 2pcs Clear Acrylic Clay Roller and Acrylic Clay Sheet Board DIY Rolling Tools Material:acrylic Acrylic Roller: 20cm in length,2cm in diameter; Acrylic Board Sheet: 15cm in length,10cm in wide Clay roller and backing board are made of premium acrylic, sturdy and durable, easy to use and clean. Acrylic clay roller matches with backing board, suitable for both home and school uses, good tools for shaping and sculpting, enjoy the fun of DIY.Kids will benefit during that process to get hand-on ability improved. With smooth surface, easy to use, you can develop your imagination to DIY crafts.