Loop end mainspring for 30 Hour clocks. Size: 3/8″ (9.5mm) Width x .014″ (.356mm) Strength x 48″ (1219mm) Length.
30-Hour Loop End Mainspring – 3/8″ x .014 x 48″
Loop end mainspring for 30 Hour clocks. Size: 3/8″ (9.5mm) Width x .014″ (.356mm) Strength x 48″ (1219mm) Length.
$3.50