Features: Product Dimension:There are three size for you to choose, 7inch, 8inch, 9inch in height (from the top shoulder to the bottom of the prong),please make sure the size before 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 Performance: These Lamp shade holders with solid construction are helpful to table lamps and floor lamps Easy Installation: This lamp harp is detachable and easy to be installed; The lamp shade holder is good for adding shine to the lamp or light Specifications: Type:Lamp Harp Material: Iron Plating Color: Chrome Size(W*H): About 7inch: 90x185mm/ 3.54x 7.28inch 8inch: 100x205mm/ 3.94x 8.07inch 9inch: 115x230mm/ 9.06x 4.53inh Bottom Hole Dia: About 10mm/ 0.39inch TeethLength: About 12mm/ 0.47inch, M6 Ball Dia: About 20mm/ 0.79inch Package Included: 2pcs x Lamp Harp Note: 1. Due to the light and screen difference, the item's color may be slightly different from the pictures. 2. Please allow 0.5-2 cm differences due to manual measurement.