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5PCS WH138-1 adjustable resistance speed regulator with switch potentiometer length 20mm B5K B10K B20K B50K B100K B250K B500K

5PCS WH138-1 adjustable resistance speed regulator with switch potentiometer length 20mm B5K B10K B20K B50K B100K B250K B500K

by KAINUOXING

£3.89

5PCS WH138-1 adjustable resistance speed regulator with switch potentiometer length 20mm B5K B10K B20K B50K B100K B250K B500K

Prices updated 25 Jun 2026

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5PCS WH138-1 adjustable resistance speed regulator with switch potentiometer length 20mm B5K B10K B20K B50K B100K B250K B500K

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