1,material: copper 2,plating: gold/nickel/tin 3,inside contact: brass and gold pate 4,high quality or reasonale price Description : 1. Description: 2 dBi Omni-directional Indoor GPRS/UMTS Antenna, 3G/UMTS, 900/1800/2170MHz, Active Antenna, Mobile Phone, 3G, UMTS, Full Band, Dual Band2. Applications:(1) For GSM 900 / 1800 & CDMA/UMTS 2170MHz(2) External Indoor Antenna(3) Wireless Data Card3. ...