Flexible Z-Axis Coupling for K8200 3D Printer Replacement flexible Z-axis coupling for the K8200 3D printer by Velleman. Specifications diameter: 16 mm / 0.63" length: 23 mm / 0.91" inside diameter: 5 mm (0.20") / 8 mm (0.31") material: 7075 aluminum max torque: 1 Nm axial flex: A 0.4 mm (0.0157") lateral flex: 0.1 mm (0.004") weight: 8.1 g (0.2857 oz) quantity: 1
