MLW handbuilds all kinds of custom bicycle wheels with your choice of parts.
DT Swiss TK540 with eyelets pictured with the Velocity A23 without eyelets. Eyelets are the grommet that’s around each spoke hole. They add strength to the rim and allow for the use of thinner rim material to save weight.
The rim on the right has double eyelets which means the grommet extends all the way through the rim. This adds even more strength.