A-15inch-38cm
B-12inch-30.5cm
C-18inch-46cm
D-10inch-25.5cm
E-21inch-53cm
F-30inch-76cm
G-6inch-15.5cm

6/6 - perfect condition. No signs of used
5 /6 - near perfect condition - barely visible signs of used.
5/6 - very good condition - normal, little signs of used. 
4/6 - good condition. may have little spots of dirt, small holes itp. 

100% Satisfaction or money back guarantee - If you're not utterly obsessed with your recent purchase, it's now so easy to send it back. If you have any questions please .