Just with a simple twist of the knob, you will be able to install or to remove the wheels from bicycle.
This knob is structured by a mechanism similar to a camera aperture plate so-called Iris diaphragm.
The center diameter expands while the knob is being twisted until the axle is allowed passing through the center.
The knob will shrink to its smallest diameter and stay at locked position due to a spring motion, so the mechanism is secure during all time.
Ultra-innovative design, winner of EUROBIKE Award 2023, a prestigious award for innovative and quality products in the bicycle and future mobility industry.
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