Adapter from PK lens to M 4/3 mount camera, plus bonus lens and metal cap included. Adapter works without issues. ☀ Bonus SMC PENTAX-M 50mm f/2 lens Helicoid and aperture are in good working order. There is dust and possibly mold on the lens. No balsam separation. This is not for lens appreciation. Metal lens cap (pictured) and genuine rear cap are included. - Brand: ASAHI PENTAX - Model Name: SMC PENTAX-M 50mm f/2 - Country of Manufacture: Japan - Lens Diameter: 50mm - Maximum Aperture: f/2 Thank you for looking.