The main body is made of nylon PA material, which has strong fatigue resistance, and the overall service life is several times that of ABS material.
Use 90A soldness material. Softer material let the wheels quieter and make less noise while pushing.
The 6061T6 aluminum alloy shaft at the key shaft part has an overall lifespan that is 3-5 times longer than that of nylon shafts (yield strength and tensile strength are 3-5 times that of nylon materials.)
Equipped with bearings suitable for brompton, can be used directly.
Let the brompton portable bike push freely to all directions when folding instead of just driving in a straight line.