Features: 
1) Imported Molds from Ireland.

2) Normal corridor (17mm):
    a) Good for medium and large size frames
    b) Popular in European countries
3) Short corridor (14mm)
4) Power range:
    a) Plano±3.00/ADD + 1.00±3.50
    b) -0.25 ~ -2.00/ADD + 1.00±3.50