Metal Pole always used on the display stand, there have fixed pole, also have adjust height pole. The pole always made of aluminium on chuangqi company. The diameter are 12mm and 9mm. There have adjust height size of 300-500mm;600-1000mm;also can reached 850-1500mm. Hangzhou chuangqi display products co.,ltd is the largest pop manufacturer. Welcome to visit our factory. Tel:86-571-85113658/85113978/86320908 Fax:86-571-85212075