• The package includes 2 sets of harp holders for lamp shades, each set includes 1 adjustable frame, 1 unit. Standard IPS saddle and 1 unit. UNO adapter. The removable lamp group can easily attach the shade to a standard desk lamp or floor lamp, and the ball head can be easily screwed and unscrewed. • Polished metal: the top of the harp accepts standard 1/4-27 threaded ends and the cap button stoppers are included in this set. The lamp holder is made of metal that can prevent the lamp harp from rusting. Standard saddle base slides 1/8 IPS (3/8" diameter). • Please note: make sure your E26 lamp holder has a ring, dedicated E26 socket converter.