6mm to 8mm coupler

I’ve been trying to purchase the 6mm hub to attach to a wheel for several months now. It’s still put of stock and the date keeps getting changed (6/30 then 7/31, now 8/13).

Is there a 6mm to 8mm coupler I can use instead?

I’m trying to attached an 6mm shaft motor to this wheel:

@michaelallen Welcome to the RobotShop Community. To confirm, what is the diameter of the shaft you’re trying to connect to? 6mm or 8mm?
If you need 8mm, wouldn’t this be preferable? 8mm Screw Hub - RobotShop
New stock is expected in 29 days for either hub, though that supplier seems to be having a few issues with production as the purchase order was placed months ago.