Befenybay 2PCS 10mm to 10mm Aluminium Plum Flexible Shaft Coupling Diameter 20mm Length 25mm Connector Flexible Coupler for 3D Printer CNC Machine and Servo Stepped Motor（10x10mm） D20 L25 10-10mm Style:10-10mm Black Oxide Finish65Mn Black Oxide

Black Oxide Finish65Mn Black Oxide Finish

5-Pitch 30 mm Length Hex Width17mm Metric Hex Coupling Nut 304 Stainless Steel Rod Coupling Nuts

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Befenybay 2PCS 10mm to 10mm Aluminium Plum Flexible Shaft Coupling Diameter 20mm Length 25mm Connector Flexible Coupler for 3D Printer CNC Machine and Servo Stepped Motor（10x10mm） D20 L25 10-10mm Style:10-10mm Black Oxide Finish65Mn Black OxideBefenybay 2PCS 10mm to 10mm Aluminium Plum Flexible Shaft Coupling Diameter 20mm Length 25mm Connector Flexible Coupler for 3D Printer CNC Machine and Servo Stepped Motor10x10mm PLEASE NOTE: The shaft coupler is not elastic, can not modify the concentricity. Shaft must be located in a straight line. If your equipment is eccentric already, then it will make noise and cause off centering. Please be cautious before your final purchasing, thank you.