Hole end mainsprings 30-40mm wide

HOLE END CLOCK MAINSPRING 38mm x 0.45mm x 54mm Clock-grade steel. Small holes at each end. Many of…

HOLE END CLOCK MAINSPRING 35mm x 0.45mm x 51mm Clock-grade steel. Many of M&P's mainsprings were p…

HOLE END CLOCK MAINSPRING 38mm x 0.45mm x 45mm Clock-grade steel. Many of M&P's mainsprings were p…

HOLE END CLOCK MAINSPRING 30mm x 0.65mm x 60mm Clock-grade steel. Many of M&P's mainsprings were p…

HOLE END CLOCK MAINSPRING 35mm x 0.70mm x 112mm Clock-grade steel. Many of M&P's mainsprings were …