Approximate Cutting Edge Size:
 
Width: 4 cm   Height: 5 cm (size small)
Width: 7 cm  Height: 8 cm (size medium)
Width: 10 cm  Height: 11 cm (size large)
Width: 11 cm  Height: 12 cm (size X large)
Width: 13 cm  Height: 14 cm (size XX large)