When purchasing only the face for the first time for automatic liquid crystal, unexpectedly undoing the flip unexpectedly made a dent of 50 × 110 mm, the headgear was broken and the large size liquid crystal that was left was fitted. Since there is thickness, I could manage to improve the spring with pliers etc. Somehow, I was able to use it just like exchange side. Since it is irregular, I am worried about whether it is good to post, but, as a thing, I feel that the balance of weight etc. is firmly made well.