Boom-strong set of crankshaft bearings with simmering rings from HI: PE, an affordable choice where the quality is also top notch.
The NTN bearings are with steel handlebars and with NTN's high quality level, you are guaranteed bearings with low friction at the same time as they can withstand many kilometers.
Note: The bearings are open on both sides and therefore can not be turned incorrectly on the crank.