Feature 1 For Pentax PK mount lens can be mounted on for Canon RF mount camera body through the PKRF adapter ring. 2 Made of high quality alloy, easy to install and remove, which will not damage the camera body and lens. 3 The surface is painted to prevent oxidation and corrosion, and feel comfortable. 4 Precise processing, tight fitting, precise fitting and no light leakage. 5 Extinction treatment on the inner side to avoid reflections affecting imaging. Suitable for Canon EOS R/PR/R5/R6 Camera.Item Type: Lens AdapterMaterial: AlloyColor: As Pictures Shown Weight: Approx. 88g/3.1ozType: Full manual adapter ringMount: PK Mount, RF MountCompatible lens: for Pentax PK mount lensApplicable camera: for Canon RF mount camera body, for example, Fit for Canon EOSR/PR/R5/R6 cameraHow to use: 1. Align the identification point of the lens mount with the identification point of the adapter ring and rotate it clockwise. When you hear a "click" sound, it means the lens has been installed in place2. Align the identification point on the lens adapter ring with the adapter ring to the identification point on the fuselage, and rotate clockwise when you hear a "click" sound, it means it is installed in place3. Press and hold the camera lens release button and rotate it counterclockwise to remove the lens together with the adapter ring4. Push the adapter ring release button and rotate it counterclockwise, the adapter ringcan be removed from the lens Package List1 x Lens Adapter