1For Pentax PK mount lens can be mounted on for Canon RF mount camera body through the PKRF adapter ring. 2Made of high quality alloy, easy to install and remove, which will not damage the camera body and lens. 3The surface is painted to prevent oxidation and corrosion, and feel comfortable. 4Precise processing, tight fitting, precise fitting and no light leakage. 5Extinction treatment on the inner side to avoid reflections affecting imaging. Suitable for Canon EOS R/PR/R5/R6 Camera. Item Type: Lens Adapter Material: Alloy Color: As Pictures Shown Weight: Approx. 88g/3.1oz Type: Full manual adapterring Mount: PK Mount, RF Mount Compatible lens: forPentaxPK mount lens Applicable camera: forCanonRF mount camera body, for example, Fit forCanonEOSR/PR/R5/R6 camera How to use: 1. Align the identification point of the lensmountwith the identification point of the adapterringand rotate it clockwise. When you hear a "click" sound, it means the lens has been installed in place 2. Align the identification point on the lens adapterringwith the adapterringto the identification point on the fuselage, and rotate clockwise when you hear a "click" sound, it means it is installed in place 3. Press and hold the camera lens release button and rotate it counterclockwise to remove the lens together with the adapterring 4. Push the adapterringrelease button and rotate it counterclockwise, the adapterringcan be removed from the lens 1 x LensAdapter