Mainsprings

1.30 x 0.125 x 360 Swiss Mainspring

2 x 13 x 6.5 1.10 x 0.08 x 180 GR2576 Bestfit MS-213W

2 x 8 x 13.5 1.10 x 0.135 x 340 GR2680 Bestfit MS-28P

2.00 x .075 x 400 Manual Swiss Mainspring / 11″ x 14″ x 15″ GR5714

3 x 13 x 7.5 1.20 x 0.08 x 200 GR2868 Bestfit MS-313A

3 x 14 x 19.5 2.30 x 0.205 x 500 GR6446 Bestfit MS-143X

4 1/2 x 10 x 11 Swiss Made Mainspring DB End.  1.30 x 0.11 x 280.  GR3281-DB Bestfit MSS-4510KS Fits Poljot/Vostok 2408, 2409, 2409A, 2414, 2414A  

4 x 12 x 8.5 1.30 x 0.09 x 220 GR3217 Bestfit MS-412C

4 x 14 x 8.5 1.30 x 0.07 x 220 GR3186 Bestfit MS-414C

5 x 12 x 11.5 1.40 x 0.09 x 300 GR3629 Bestfit MS-512K

5 x 13 x 9.5 1.40 x 0.08 x 240 GR3607 Bestfit MS-513E

5.5 x 9 17.5 1.45 x 0.125 x 440 GR4007-D Bestfit MS-559V