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DC Power Jack-Female Connector with 2 pin Screw Terminal - Pack of 2 : Amazon.in: Industrial & Scientific
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Female DC Power adapter - 2.1mm jack to screw terminal block : ID 368 : $2.00 : Adafruit Industries, Unique & fun DIY electronics and kits
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4pcs Terminal Fastener 4mm Binding Post Banana Jack Terminal With Metal Insert Nuts Connector - Connectors - AliExpress
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