CASTECH offer different kinds of KD*P Pockets Cells. The DPC-R series are cylindrical and the DPC-S series are cubic. For DPC-R series, the electrode connection can be optional among wires , thread and pin. And also, it's available with integrated, pre-adjusted Brewster polarizer such as DPC-R8S-PB and with ceramic to control the aperture such as DPC-R8S-PC. And for the DPC-S series, switching voltage can be halved such as DPC-S8D-P.