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$4.33Each Real time qty checker Compare	Elma 21mm Blue Potentiometer Knob Cap, 040-4040 Knob Diameter21mm Knob Height5.4mm Body ColourBlue Indicator ColourBlue See similar products in Potentiometer Knobs	RS Stock No. 243-9593 Brand Elma Mfr. Part No. 040-4040
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$10.711 Each (In a Box of 100) Real time qty checker Compare	Elma 21mm Grey Potentiometer Knob for 6.35mm Shaft Round Shaft, 023-4510 Shaft Size6.35mm Knob Diameter21mm Shaft TypeRound Shaft Knob Height18.5mm Body ColourGrey See similar products in Potentiometer Knobs	RS Stock No. 243-9565 Brand Elma Mfr. Part No. 023-4510
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$3.305 Each (In a Box of 100) Real time qty checker Compare	Elma 21mm Green Potentiometer Knob, 040-4065 Knob Diameter21mm Knob Height5.4mm Body ColourGreen Indicator ColourGreen See similar products in Potentiometer Knobs	RS Stock No. 243-9597 Brand Elma Mfr. Part No. 040-4065
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