Daniel needed a nice adapter for his fancy new bike. He’s running fixed LSD with Profile type cranks. Needed adapters to the PF30 we built into his frame. Simple stuff and problem solved.
On most bikes these adapters could have been made of delrin. The issue is that Daniel does a bit of crank and pedal grinds so having something that would handle the abuse was in order so 6061 aluminum was the direction we went.