1. Ball lamp finial made of aluminium, including copper reducer. 2. Diameter 0.94 inch, 1.42 inches high. 3. Dual threads design fit both 1/8IP threaded pipe or 1/4-27 threads standard lamp harp 4. Used to secures lampshade onto the standard table or floor lamps. Easily screws on or off. 5. Packing: 2 lamp finials and 2 reducers . The lamp finial is the lamp part that screw onto the top of lamp harp and hold the washer fitter typle lamp shade on the top of a table or floor lamp. This lamp finial topper and reducer set is dual threads design from 1/8IP-27 to 1/4-27 to fit different lamp tops