To the carriage with the 75 Ø caster was attached to the one of 100 Φ with this repair as a machine. Absorption of irregularities increased more than expected, it got overcome as much as possible the cracks of asphalt, etc. It was the correct answer by size up. The thing itself is rolling, good direction with good performance with good directional change. In difficulty I ordered things with mounting screws M12, but inch size items arrived. Since I did not have a period to exchange it, I bought a new nut and used it, but I was surprised by a mistake not being monoterous.