Product Features: DIY Craft Square Cast Acrylic Sheets Material: 4 mm clear acrylic cast sheets is the ideal DIY material for craft carving projects.You can use a knife,drill,saw, planer,laser,etc.to carve patterns on it and then display your handmade creations with lights. LED Light Board Specifications: Material: Cast Acrylic Color: Clear Size: approx. 15 x 13 x 0.4 cm/ 5.9 x 5.1 x 0.16 inches Package includes: 12 x Acrylic sheets blank Notes: Manual measurement,please allow slight errors on size. The color may exist a slight difference due to different screen displays.