Features: Product Dimension:There are three size f you to choose, 7inch, 8inch, 9inch in height (from the top shoulder to the bottom of the prong),please make sure the size befe you purchase. Material: Made of iron plating with chrome polished surface which is a kind of protective coating to prevent lamp harp from getting rust Practical Harps: Harps are those flexible U-shaped metal wires that connect the lamp base to the lamp shade; Most harps have a small metal cap on each end to prevent the harp from slipping off the socket; They are useful to protect the bulb from accidental breakage Good Perfmance: These Lamp shade holders with solid construction are helpful to table lamps flo lamps Easy Installation: This lamp harp is detachable easy to be installed; The lamp shade holder is good f adding shine to the lamp light Specifications: Type:Lamp Harp Material: Iron Plating Col: Chrome Size(WH): About 7inch: 90x185mm or 3.54x7.28inch 8inch: 100x205mm or 3.94x8.07inch 9inch: 115x230mm or 9.06x4.53inh Bottom Hole Dia: About 10mm or 0.39inch TeethLength: About 12mm or 0.47inch, M6 Ball Dia: About 20mm or 0.79inch Package Included: 2pcs x Lamp Harp Note: 1. Due to the light screen difference, the itemand 039;s col may be slightly different from the pictures. 2. Please allow 0.5-2 cm differences due to manual measurement.