Review on 🔩 SRAM Chainring Bolt Kit 5 Arm for Red 2013 (Hidden Bolt) - Aluminium Black: High-Quality Upgrade for Optimal Performance by Daniel Evans

I'm sure these are superbly made sprocket bolts but they are totally useless for the Sram hidden sprocket cranks I've tried fitting them to. I have a Red 22 Quarq power meter and wanted to change it back to 10x. There was a nut stuck in the 11 speed ring so I figured the 10 speed ring would come with it too. It is not. Then I bought this. They don't work either. Finally the nice folks at Quarq sent me a matching bolt. The system is not very complicated, but there is no documentation about it anywhere. Judging by the pictures on the web, they will be running on a Red 22 crankset with an integrated carbon spider. None of the cranks have an aluminum spider.