Vintage Frey Co Brass Nesting Screwdrivers 4 in 1It says Frey Co New York on the largest screwdriver. The outside screwdriver measures 6 and one quarter inches. The bottom screws off and another screwdriver comes out. It measures 3 three quarters long. Unscrew the bottom again and another one comes out which is 2 and one quarter inches long. Unscrew the bottom of that one and the final tiny screwdriver appears. It is one and one half inches long and would fix the screws on your glasses! This was in my fathers tool chest and it is at least 50 years old. It shows some wear but in good condition and unique. I will ship international but please email for shipping fees.