Brass Shade Gallery (3 screws) Hole diameter (approx.) 2.8cm Outer frame diameter (approx.) 6cm Suitable for shades with a mouth of approximately 5 to 5.5cm. Screws are approximately 1.3cm long. Screws are copper-colored. Height (approx.) 2.5cm This is a fitting for attaching a lampshade. Please understand that this item is from about 30 years ago before purchasing. There is discoloration on the outside of the brass. It goes well with antique shades. Please check the condition in the photos.