The MINOLTA AF 2X TELE CONVERTER-II APO is a high-quality teleconverter designed for Sony A-mount lenses, manufactured by Minolta in Japan. It has a maximum aperture of 2X and is compatible with Sony and Minolta lens brands. Made from durable plastic, this unit offers auto focus capabilities and a 3-month manufacturer warranty. With a focal length fixed at prime, this converter is a reliable and versatile accessory for photographers looking to extend the reach of their lenses.