Features: A strong magnetics is installed on the originals structure to act as a part of the foot support, and as long as the magnetics can be sborbed, it can be parked. 10cm wide tread, more fit and more labor saving, increase the contact area between sole and foot, more stable power. Aluminum alloy material, light weight, strong use, not easy to break. 14mm universal thread, chrome molybdenum steel axle, suitable for most bicycles. Sealed sleeve waterproof and dustproof, not easy to rust. Built-in pellin, stable lift, lubrication and labor saving. The left and right feet are marked for easy installation.