White oak | brown | burlywood

5 inches (inner diameter 8.9*12.7cm) vertical dual use | 6 inches (inner diameter 10.2*15.2cm) horizontal and vertical dual use | 7 inch (inner diameter 12.7*17.8cm) vertical dual use | 8 inch (inner diameter 15.2*20.3cm) vertical dual use | 10 inch (inner diameter 20.3*25.4cm) horizontal and vertical dual use | A4(inner diameter 21*29.7cm) horizontal and vertical dual use | 12 inches (inside diameter 25.4*30.5cm) horizontal and vertical dual use | 16 inches (inner diameter 30*40cm) horizontal and vertical dual use | A3 (inner diameter 42.1*29.8cm) horizontal and vertical dual use | Square 4 inches (inner diameter 10cm*10cm) | Square 8 inches (inner diameter 20.3*20.3cm) | Square 9 inches (inner diameter 22.8*22.8cm)