Model: 19960-1, 15mm, 20mm, 25mm, 30mm, 35mm, 40mm, 45mm, 50mm,  Use of  Square ring : for Garments, handbags,  and so on, Colour of   Square ring :  various, like golden, gunmetal, nickel, antique brass, etc. Sizes: various  Remarks:  We can design different  Square ring according to customer's demands.