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HOLE END CLOCK MAINSPRING 20mm x 0.45mm x 45mm Clock-grade steel. Many of M&P's mainsprings were p…

HOLE END CLOCK MAINSPRING 21mm x 0.30mm x 30mm Clock-grade steel. Many of M&P's mainsprings were p…

HOLE END CLOCK MAINSPRING 21mm x 0.38mm x 50mm Clock-grade steel. Many of M&P's mainsprings were p…

HOLE END CLOCK MAINSPRING 22mm x 0.25mm x 28mm Clock-grade steel. Many of M&P's mainsprings were p…

HOLE END CLOCK MAINSPRING 22mm x 0.30mm x 30mm Clock-grade steel. Many of M&P's mainsprings were p…

HOLE END CLOCK MAINSPRING 22mm x 0.30mm x 35mm Clock-grade steel. Many of M&P's mainsprings were p…

HOLE END CLOCK MAINSPRING 22mm x 0.45mm x 45mm Clock-grade steel. Many of M&P's mainsprings were p…

HOLE END CLOCK MAINSPRING 24mm x 0.40mm x 40mm Clock-grade steel. Many of M&P's mainsprings were p…

HOLE END CLOCK MAINSPRING 24mm x 0.50mm x 50mm Clock-grade steel. Many of M&P's mainsprings were p…

HOLE END CLOCK MAINSPRING 25mm 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 0.45mm x 51mm Clock-grade steel. Many of M&P's mainsprings were p…

HOLE END CLOCK MAINSPRING 35mm x 0.45mm x 54mm 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 …

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

EUREKA CLOCK SPRING MATERIAL 2.4mm x 0.33mm 1 metre lengths of mild spring material as suited to the…

11mm x 0.20 x 20mm - CARBON SPRING MATERIAL - COIL LENGTH TO SUIT 20MM BARREL Raw material sourced t…

13mm x 0.40 x 35mm - CARBON SPRING MATERIAL - COIL LENGTH TO SUIT 35MM BARREL Raw material sourced t…

16mm x 0.25 x 30mm - CARBON SPRING MATERIAL - COIL LENGTH TO SUIT 30MM BARREL Raw material sourced t…

16mm x 0.40 x 45mm - CARBON SPRING MATERIAL - COIL LENGTH TO SUIT 45MM BARREL Raw material sourced t…