2.4G 2DBI Dual Antenna PR-SMA Female (Pin) Router WIFI Antenna 109MM IPX IPXE Vertical Good Connector Pure brass at the base with Great connectivity.(Not Alloy) 2.4GHz Duck Antenna 2.2dBi with Reverse Polarized - SMA RF connector. Perfect for prototyping with our RF ICs. 50 ohm impedance. This compact WiFi omnidirectional antenna is designed for the 2.4 GHz frequency band (IEEE 802.11 b/g/n) and has a gain of?2dBi.? Use Best Flame retardancy material. 5-12 Businese day delivery to USA Address if Fullfilled by seller.