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uxcell Aluminum Case Resistor 100W 3 Ohm Wirewound Yellow for LED Replacement Converter 100W 3RJ 2Pcs: Amazon.com: Industrial & Scientific
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uxcell 20 x 1/2W Watt 3 ohm 3R Carbon Film Resistor 0.5W
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Amazon.com: Gikfun 2" 4Ohm 3W Full Range Audio Speaker Stereo Woofer Loudspeaker for Arduino (Pack of 2pcs) EK1725 : Electronics