American Rivetted Loop End Mainsprings: 1/2" (12.7mm)
£ 10.95 each
American Rivetted Loop End Mainsprings: 9/16" (14.3mm)
£ 12.95 each
American Rivetted Loop End Mainsprings: 5/8" (15.9mm)
£ 17.95 each
American Rivetted Loop End Mainsprings: 11/16" (17.5mm)
£ 17.95 each
American Rivetted Loop End Mainsprings: 3/4" (19.1mm)
£ 18.95 each