I did not use these Dubro wheel or these really terrible brakes. I think they are a rip off. Besides how on earth you let a jet roll at high speed on a runway with plastic wheel rims? Jet wheels should have ball bearing equipped rims.
I made a set from Behotec with Behotec brakes since the mains axle is 6mm and used the Intairco nose wheels since the nose axles are imperial and not metric.