The Cherry Multi-power lens set includes a teleconverter with a 2x magnification and a 35mm focal length, designed for use with Pentax K SLR cameras. With a maximum aperture of f/5.6, this vintage lens offers a solid build with a metal lens barrel, providing photographers with a versatile and high-quality option for capturing images. Ideal for those looking to expand their photography gear with a reliable and unique lens set from a trusted brand.