Canon 2x RF Extender ~ 5 Years of EOS R Instant Save

2x RF Extender 

Qualifying EOS R System Cameras and kits
EOS R5 body only, and RF lens kits
EOS C70 body only
EOS R5 C body only 
EOS R3 body only
EOS R6 body only and EOS R6 RF lens kits
EOS R6 Mark II body only, and RF lens kits
EOS R7 body only, and RF lens kits
EOS R8 body only and RF lens kits
EOS R10 body only and RF lens kits
EOS R50 body only and RF lens kits
EOS R100 body only and RF lens kits
EOS R body only, and RF lens kits
EOS RP body only, and lens kits
 
Extend your reach even further with a 2x extender designed specifically for the RF lens system, maintaining image quality and high-speed communication between camera and lens. 
The Extender RF 2x is the perfect choice for enthusiast and professional photographers seeking more magnification from their RF lenses. Doubling focal length, it is ideal for press, nature and sport photographers.
The extender features high-refraction, low-dispersion glass to control curvature of field and chromatic aberration of magnification for the highest image quality.
As well as optimised lens coatings, a 3-layer combined lens helps to reduce ghosting by reducing the surfaces in contact with the air as much as possible.
The exterior is coated in the same white heat shield coating as used on the RF 100-500mm F4.5-7.1L IS USM and RF 70-200mm lens to prevent deterioration in performance in high temperatures.
Specifications:
9 lens elements, 5 groups
71.2 x 39.3mm
340g