Many sew-on selections are manufactured of brass. They are extremely strong and can hold heavy curtains without the need of distorting the hooks. They in many cases are unadorned. It is mainly because they are invisible from the exterior. They may be hand-sewn into the fabric on the header tape. https://kinds-of-curtain-hooks90000.tblogz.com/little-known-facts-about-types-of-curtain-tops-hooks-43542024