$5 Flexible Shaft Coupling Pack S and D Series 19x25mm 3D print model 3D model by HCUmechanical. Available on CGTrader. Check it out on CGHub.
STL (Stereolithography, filesize: 50.7 MB), OBJ (OBJ, filesize: 50.7 MB), FBX (Autodesk FBX, filesize: 25.3 MB), SLDPRT (SolidWorks, filesize: 50.7 MB), 3DS (3D Studio, filesize: 25.3 MB), STP (STEP, filesize: 25.3 MB)