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Aluminum Turn Knob (#4-36 Thread)Hillman Item #54121
An assortment of turn knobs, extension knobs, and battery head screws from The Hillman Group. The parts in this assortment are ideal for replacing old and/or broken knob switches in lighting installations. Full assortment contains nine (9) refills comprised of Hillman item numbers #54121 and #54123 - #54130.
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