72-piece assortment of balance springs with collets for small clocks. Made in India.
CONSISTS OF FOUR SIZES -
OD 16MM W/ 1.84MM OPENING IN BRASS COLLET
OD 13.15MM W/ 0.87MM OPENING IN BRASS COLLET
OD 10.68MM W/2MM OPENING IN BRASS COLLET
OD 9.35MM W/1.67MM OPENING IN BRASS COLLET