This adapter allows to use PL mount  lenses on RF mount system cameras.

Review - newsshooter.com

Main features:

• Weight ( without PL cap)  - only 160g / 5.6 oz
• Adjustable flange focal distance (shims available here)
• 0,005mm accuracy
• Infinity focusing
• Made of aircraft grade alloy
  
• Black anodized
• Made in UE

Comaptible with:

• Canon EOS C70
  
• Canon EOS R3, R5, R6, R7, R8, R10, R50
  
• Canon EOS 5RC
• Canon EOS R, RP, Ra
  
• RED Komodo
• RED V-Raptor