The worlds best performing towing mirror made to an extremely high quality for regular use, with superior chrome safety glass and assembled using stainless steel screws into brass threaded inserts. Strap-free to eliminate rubbing of straps on colour coded mirror shells. The Convex mirror is like looking at the back of a spoon, the image is smaller but allows you a much wider view where as the flat glass mirrors are your everyday mirror. Both are top quality products! Which one you choose depends on which you prefer!