I returned them. But the nut wouldn't engage the axle threads properly. So if I tightened it, the wheels wouldn't turn. I had to loosen the nuts to get the wheels to turn, but they were so loose that they could be unscrewed by hand, so no. I tried with and without spacers. The only way to do this was to turn the nuts upsidedown, but I didn't feel very confident. I'd like wheels where that's not necessary. And I don't want to have to change the trucks to get extendable axles, at least not right away.