These covers are used for installation on bicycle pedal bearings to prevent dust, dirt, and water from entering the crankshaft.
The installation diameter of this dust cover is 21mm, suitable for almost all common cranks. The installation is very simple, just press it into the crank hole to complete the installation.
Its overall size is 24x9.5mm, with an inner diameter of 19.2mm. The black outer shell not only provides dust protection but also serves as a decorative element, making the bicycle look more aesthetically pleasing.
Its material is plastic, solid and durable, with a protruding groove design at the installation site, which is stable and not easy to fall off after installation. You can buy it with confidence.