Approximate Cutting Edge Size:
 
Width: 5 cm   Height: 4 cm (size small)
Width: 9 cm  Height: 8 cm (size medium)
Width: 11 cm  Height: 10 cm (size large)
Width: 12 cm  Height: 11 cm (size X large)
Width: 14 cm  Height: 13 cm (size XX large)