“I bought a couple of these for a lego rc project and they have not dissapointed me. They stay on the motor very well and are sturdy enough for my purposes (little lego rc vehicle). Putting lego gearwheels w cross hole on the axle is easy, even though the fit is not perfect (getting them on requires a bit of force), but I see that as a positive point because it means the gears don't slip off.
If I had to name a negative point it would be that they are quite long (axle is about the length of two standard beams and a gear + the length of the sleeve that goes on to the motor), but that may not be an issue depending on your build.”
“This axle fits tight both on the TT-motor and on Lego parts : you need to apply quit some strength to get it on the motor and also to get the Lego components on it. Yet it fits smootly into an axle-holding brick. So perfect as axle for a wheel or driving gearing wheels.”
