Marge Lite Rim Strips
46mm for 65-80mm rims
Fits Marge Lite, Rolling Darryl and other similar size Fat bike rims
Surly Rim Strips have one job and they do it well.
They cover the cutouts in your rim and - if youre running a tube - they protect it from spoke heads and other sharp matter (okay, so maybe they have TWO jobs but they do them both really well.)
Rim strips are crucial and should be used with all Surly rims.