Device Full Length:S-50mm,M-57mm,L-64mm,XL-72mm
Penis Tube Diameter:33mm/1.26inch
When place your order,you need to select the cage style(S,M,L,XL) and the base ring combination.
Base Ring Size:40mm/45mm/50mm/55mm(1.57inch/1.77inch/1.97inch/2.17inch)
Base Ring Options you can choose:
40mm ring+45mm ring (1.57inch+1.77inch)
45mm ring+50mm ring(1.77inch+1.97inch)
50mm ring+55mm ring(1.97inch+2.17inch)
If these exsiting base ring size can't fit you perfectly.You can select "customize base ring" option to place order and fill the size of base ring you want into the textbox.