Bicycle chain cover 1)Material:Carbon steel SPCC 2)Finish: Plain, black, ... tapping screw,Self drilling screw,Machine screw,Bolts,Nuts,Washers,Anchor bolts and so on.All of these products have stock ... development of both employees and the company. .………………………………………………………………………………………………………......... [Product Description]Bicycle chain cover1)Material:Carbon steel SPCC2)Finish: Plain, black, etc.3 ...