Approximate Cutting Edge Size:
 
Width: 6 cm   Height: 4 cm (size small)
Width: 9 cm  Height: 6 cm (size medium)
Width: 12 cm  Height: 8 cm (size large)
Width: 13 cm  Height: 10 cm (size X large)
Width: 15 cm  Height: 12 cm (size XX large)