0667 Watch Mainspring 1.40 x 0.07 x 226 (9") (Calibers in description) Side Hook for balance and escape wheel

for balance and escape wheel - yellow plate

and many other materials

14kt Yellow Round Bezel Setting is available in 4mm

20 mm round plastic crystal with white ring

The spindle type is simple

0667 Watch Mainspring 1.40 x 0.07 x 226 (9") (Calibers in description) Side Hook for balance and escape wheelDimensions: 1. 40 x 0. 07 x 226 (9") End Type: Tongue End Material: Swiss Made unbreakable Calibers: AS 1677, AS 1735, AS 1736, AS 1777, Benrus AP, Benrus DZA, Benrus DZ2F, Benrus DZ4F1, Ebel 50, Ebel 56, Enicar 1503, Eterna 1437, FE 68, Kasper 1100, LIP SA T 0 13, Marvin 160, Omega 1070, PUW 1075, Recta M, Tissot 2400, Tissot 2401, Tissot 2403, Wyler WL123