It is a 1M Linear Potentiometer Plastic Shaft. This is used for adjusting various parameters like voltage, current, etc in an electronic circuit.

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Applications:

1. Voltage and Current Control Circuits
2. Used as volume control knobs in radios
3. Tuning or controlling circuits
4. Analog input control knobs

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Package Includes:

1 x 1M Linear Potentiometer Plastic Shaft