Metal Pack of 32 Imported Design for heavy-weight curtains Color: black Diameter: Small: 1 1/2 inches for inner, 1 13/16 inches for outside; Large: 2 1/4 inches for inner, 2 5/16 inches for outside. Suitable for most curtain rods on the market. Great accessory for daily household use, curtains, shower curtains, or lining. The curtain head needs to be matched with the curtain ring - pinch pleat, triple pleat, tailor pleat, triple tailor pleat, goblet, invert pleated box, 4-In-1 (Clip Ring and Hook Belt), flat hook.