Manual Mainsprings 1.16mm - 1.20mm

Mainspring, 1.20 x 0.145 x 420 x 13.00, Manual [GR3010]

Mainspring, 1.20 x 0.160 x 440 x 13.50, Manual [GR3023]

Mainspring, 1.20 x 0.170 x 460 x 14.00, Manual

Mainspring, 1.20 x 0.170 x 500 x 15.50, Manual

Mainspring, 1.20 x 0.185 x 500 x 15.50, Manual

Mainspring, 1.20 x 0.195 x 490 x 16.00, Manual

Mainspring, 1.20 x 0.205 x 500 x 16.00, Manual