Agreed, but what I need are:For the rear dropout space on a Q45 it is 100 mm wide - so you will need a “front hub” (which would normally be on the front of a traditional bike). The the Q45’s front wheel you will require a hub that will accommodate the cassette you’re using. So on my older Q45 IT HAS an 11 speed cassette & most hubs that take an 11 speed cassette will also take an 8-9-10 speed cassette with a spacer. MAKE SURE your hubs are thru-axle & not Quick Release (QR), since that what the newer Cruzbike take.