The PG500080810 piezoelectric actuator is a tube with an 8 mm outer diameter, 7 mm inner diameter,and 10 mm length. It offers a maximum displacement of 2.8 μm ± 15% in the axial direction and 1.8 μm ± 15% in the radial direction. The tube contracts in both the axial and radial directions when a positive voltage is applied. The internal and external walls have fired silver electrodes. The inner surface is the positive electrode and the outer surface is the negative electrode. The piezo element can be driven by voltages between 0 V and 500 V.