Bicycle chain cover 1)Material:Carbon steel SPCC 2)Finish: Plain, ... steel,brass,etc.)screws,nuts,washersa and so on,widely used in mechanical equipment,public transportation means and device,electronic ... development of both employees and the company. .………………………………………………………………………………………………………......... [Product Description]Bicycle chain cover1)Material:Carbon steel SPCC2)Finish: Plain, black, etc.3 ...