1. Because of bearing with solid butter, so the speed is not so fast for the first time use. Mounted on the skateboard or skateboard shoes to slide for a distance, then the internal solid butter will dissolve into liquid, and the bearing will be up to optimum speed.
2. Using the most popular carbon steel material, with a high cost ratio
3. Notice that keep bearing rust protection, avoid damp places, besides, you should wear gloves when using it to avoid being stained with sweat.
4. If you let the bearing have a strong impact, it may cause in bearing scars, indentation, fracture and other injuries when in use.
5. Double dust cover design, effective isolation from the dust.