STRONGLIGHT IMPACT CRANK ARMS

The Stronglight Impact is a rare bird these days. It takes 3 chainrings. It takes a square tapered bottom bracket. IT'S SILVER.
Perfect for all of your shifting wants and needs. Run it as a triple. Run it as a wide/low double (with or without a chain guard). Use a narrow BB and use it as a 1x.

You can do what you want. And that's a beautiful thing.