Has any member used these Digirit Shimano Dura Ace 9100/Ultegra R8000 Di2 Oversize Pu

[cnighbor1]

Has any member used these Digirit Shimano Dura Ace 9100/Ultegra R8000 Di2 Oversize Pulleys What is the advantage using them thanks
Charles
https://www.ebay.com/itm/Digirit-Shimano-Dura-Ace-9100-Ultegra-R8000-Di2-Oversize-Pulleys-Wheel-kit/173654866752?hash=item286ea2fb40:m:mEILrNCWmPPdg6D GaZI6YUA:rk:5:pf:0&LH_ItemCondition=3
Digirit Derailleur 16/16T Pulley Wheel Kit
For Shimano 6800/9000 NIB

Brand: Digirit
Compatible:Shimano Dura Ace 9000/Ultegra 6800&6700 10s and 11s,electronic and mechanical rear derailleur
Uncompatible: R9100 & R8000

Qty: 1set
Color: Black,Red Option--- (same as the photo)
Top Pully: 16tooth
Bottom Pully: 16tooth​
​Matiral : ALxMgxSi Composite aluminum alloy
​Weight : 68 grams​

Digirit Derailleur 12/16T Pulley Wheel Kit
For Shimano R9100/R8000

Brand: Digirit
Compatible: Shimano R9100/R8000/R8050 DI2,R9150 electronic and mechanical rear derailleur ,
uncompatible Ultegra 6800&6700 /Dura Ace 10s and 11s .

Qty: 1set
Color: Black,Red --Option (same as the photo)
Top Pully: 12tooth
Bottom Pully: 16tooth​
​Matiral : ALxMgxSi Composite aluminum alloy
​Weight : 72 grams​

[peanutgallery]

It takes something simple and refined...and makes it much more complicated. Not a fan of ripping apart perfectly good rear derailleurs

Plus it's designed/manufactured/marketed by the people's liberation army. So there's that