If you’re working on a vintage MTB conversion into a basket bike, commuter bike, or touring bike, and want to go with a 1x drivetrain, you’ll be shocked to find that there aren’t many options for vintage crank bolt center diameters. Stridsland took that as impetus to make some!
94, 104, and 110 BCDs were commonplace in the 1980s and 1990s crank designs, so that prompted Stridsland to make 1x narrow wide chainrings. These rings (440 DKK or ~ $63.37 USD) are meant to be ridden as a 1x system and come in an array of hues. There are even colored chainring bolts to top off your build.
Check out the full offerings at Stridsland.