... , CV-CXD20-420mm75mmPX, PV, CV-CXD20-520mm76.2mmPX, PV, CV-CXD20-620mm4''PX, PV, CV-CXD20-720mm5''PX, PV, CV-CXD20-820mm7.5''PX, PV, CV-CX ... Part Nodiameterfocal lengthshapeD25.4-125.4mm38.1mmPX, PV, CV-CXD25.4 ... -625.4mm4''PX, PV, CV-CXD25.4-725.4mm5''PX, PV, CV-CXD25.4-825.4mm7.5''PX, PV, CV-CX MY20.0-2 ...