Product Description
Hampden 18 Size Balance staff part 1722 old number 22BB97 for 18 Size Small collet double Roller pivot 13
Works for Flat or Breguet Hairspring
Overall Height 5.75mm
Distance from Roller Seat to Pivot 3.60mm
Hairspring Collet hole 0.76mm
Balance arm hole 1.27mm
Roller hole 0.71mm
