Maker

Item #

Size

Description

In Stock

Price

Buy

Howard

JA350

18/S

Mainspring Factory # 55
width in mm 2.8, strength in mm 0.205
length inches 23-1/2, end HOLE

Yes

$9.20

Howard

JA352

16/S

Mainspring Factory # 328
width in mm 2.75, strength in mm 0.165
length inches 21-1/2, end HOLE

Yes

$9.20

Howard

JA353

16s

Mainspring Factory # 329
width in mm 2.7, strength in mm 0.18
length inches 21, end T

Yes

$9.20

Howard

JA354

12s

Mainspring Factory # 552
width in mm 1.8, strength in mm 0.15
length inches 19-1/2, end HOLE

Yes

$9.20

Howard

JA355

12s

Mainspring Factory # 553
width in mm 1.8, strength in mm 0.16
length inches 19, end T

Yes

$9.20

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