Holders for Balance Screws 0.55 mm Omega® 471 Please choose the size that

Please choose the size that best suits your needs

30 mm opening diameter of the inside ring

hole size: 120/190 (minute/hour) * sold by the pair

Mido® Crown CN-MID-08 model number 606

Holders for Balance Screws 0.55 mm Omega® 471 Please choose the size thatHolders for Balance Screws 0. 55 mm is a specialized slide locking pin vise specifically designed to hold balance screws. Many of the older watches were designed with balance screws, which need adjustment to ensure an even oscillation of the balance wheel. This holder is designed to hold a balance screw with a head diameter of 0. 55 mm. Total length of this pin vise is 115 mm.