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

Review - newsshooter.com

Main features:

• Adjustable flange focal distance (shims available here)
• Stainless steel PL mount flange
• Support foot with 1/4" and 3/8" mounting points
• 0,005mm accuracy
• Infinity focusing
• Made of aircraft grade alloy and stainless steel
• Campatible with 8Sinn cages
  
• Black/silver anodized
• Made in UE
• Weight ( without PL cap)  - 376 g / 13.3 oz
  

Comaptible with:

• Canon EOS C70, C400
  
• Canon EOS R3, R5, R6, R7, R8, R10, R50, R100, R5II, R6II,
  
• Canon EOS 5RC
• Canon EOS R, RP, Ra
  
• RED Komodo 6K
  
• RED Komodo-X
  
• RED V-Raptor