HELIOS-44M-4, 58mm, M42 mount lens. Includes a Canon EF mount adapter. Stored in a dehumidified storage box. Everything in the photos is included (lens body, lens cap, lens hood, adapter). - Model: HELIOS-44M-4 - Mount Type: M42 - Aperture: f/2 - f/16 - Focal Length: 58mm - Lens Construction: 6 elements in 6 groups - Filter Diameter: 49mm - Color: Black Thank you for looking.