Easy to install, screws onto the lamp harp after installing the lamp shade. Lamp finials are threaded 1/4-27 to fit standard lamp harps. Decorative metal lamp shade finial of a STANDING DEER that measures 1 1/8" wide x 4 1/8" tall. It is an alloy material and the base is brass with antique brass finish. It has standard threaded finial hole (1/4-27) that works with standard harp (lamp bracket). If you need to fit a standard 1/8 IPS lamp (3/8" diameter) pipe buy a reducer Like Amazon item #B07XPDF481.