The Connector of Drag Chain Suitale for 5x5 7x7 10x10 10x15 10x20 10x30 End Connectors for 3D Printer Engraving Machine CNC

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2 paris of connectors include : 2 X head connectors,2 X tail connectors, 4 pieces in total 2 sets of connectors include : 2 X head connectors,2 X tail connectors, 4 pieces in total *If you only buy the connector, there is only the connector, and the connector needs to be used in conjunction with the drag chain. *Each drag chain already contains a pair of connectors, and each set of connectors is composed of a head and a tail.*The standard length of drag chain is one meter, and you can assemble it to the length you want.