Using a 650b X 47mm tire you have the same outside tire diameter as a 700c road tire, so for your gravel bike you can run the 650b gravel tires for off road riding, and swap to 700c road wheels for road group rides and nothing changes with the geometry or gear ration on the bike.
Rims Highlights
Material: Toray T700 30mm external / 24mm internal to fit wider tires
Size: Gravel 650B Hookless 2.8mm offset helps to even out the spoke tension for a more balanced wheels
Type: Without brake surface for disc brake Tubeless / Hookless design to provide the best impact resistance
Outer Width: 30mm With a nice aero profile and rim shape designed to help crosswind stability
Inner Width: 24mm
Depth: 35mm
Offset: 2.8mm
Weave: UD / 3K / 12K
Finish: Matt / Glossy
Spoke count: 16-32H
Nipple hole: External / Internal
Weight: 1500g+/-20g
Rider weight limit: 120KG
Max spoke tension: 140KGF
Max tire pressure: 65PSI
Flatness: ≤0.2mm
Roundness: ≤0.3mm
Hubs (center lock / 12mm TA)
Powerway CT11 / CT31
DT350s
DT240s
Spokes
Pillar PSR AERO 1423
Sapim CX-RAY
Cross Section
