Acrylic clay roller: the clear clay roller in solid cylinder shape, the length is approx. 20 cm/ 7.87 inches, the diameter is 2 cm/ 0.8 inch. Acrylic sheet: the clear acrylic sheet in rectangle shape, size (LW) is 15 x 10 cm/ 5.9 x 3.9 inches, with protective coverings, protect the roller from scratching. Acrylic material: clay roller and backing board are made of acrylic material, sturdy and durable, easy to clean with soap and water. Application: 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. Quantity: 4 pieces (2 x acrylic clay roller, 2 x acrylic backing board), with smooth surface, easy to use, you can develop your imagination to DIY crafts. Specification: Colour:Transparent color Material:Acrylic Size:10x15cm/19.5x2cm Package Contents: 2 x acrylic clay roller 2 x acrylic backing board Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.