... , Outer Diameter 30mm, Length 42mm, bore 6.35-10mm 30*42--6.35-10mm Oldham Coupling, Outer Diameter 30mm, ... rotational characteristics. * Material: Aluminum alloy + middle part: polyurethane 4 pieces. * M: The hole dia. Of the encoder end. ... M: The hole dia. of the encoder end.Φ4,Φ5,Φ6,Φ8,Φ10,Φ12,Φ15mmN: the hole dia.of ... the user end.Φ4,Φ5,Φ6,Φ6.35,Φ7,Φ8,Φ10,Φ12,Φ15mmTorque≤5.0NmThe ...