Product Specifications:
Material: Plastic
Hole Inner Diameter: 5.14mm
Hole Outer Diameter: 9.44 mm
Type 1: Approx. 5.91 x 5.91 inches (15 x 15 cm).
Type 2: About 20 x 20 cm / 7.87 x 7.87 inch (optional)
Weight: Approx. 4.6 oz (130 g) (5.9 x 5.9 inches (15 x 15 cm)) / 9.8 oz (255 g) (7.9