Needs a tightening wrench to reattach the nuts to the screws.
These were bought for me and my mother, in the first day my mother's pair came loose. Unlike other glasses these do not have a kit to tighten them. You need to have a extremely small wrench in order to tighten the nuts that are on the screws. I wish they had a tightening set with these glasses.
Rating: 2 stars