Fork for Eta-Chron Studs

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Fork for Eta-Chron Studs Fork for removing the hairspring studs for the new ETA-CHRON series of balance wheels. The new ETA-CHRON hairspring studs are not held with a stud screw, t hey are a specially designed stud that turns and locks into place. This particular blade shaped fork aids the watchmaker when attaching removing the hairspring stud from the stud holder. Show more