It's a 2Dbi RP SMA antenna, which is used for wireless pc cards or routers. The frequency range is 2.4 GHz to 5 GHz. Its connector type is RP SMA male. It is designed to prevent the unauthorized connection of an external antenna to increase the range. The RP-SMA male is also the connector with inside threads, but it has the metal sleeve as an inner conductor. 

Specifications :

• Product - 2Dbi RP SMA antenna 
• Connector RP SMA male 
• Frequency - 2.4 To 5GHz
• Maximum Range - 4.25 Meter 
• Dimension - 10 x 50mm
• Connector Diameter - 5.2mm

Features :

• It Omni directional and can be adjusted in all directions 
• It's durable
• It is easy to use
• It has a metal sleeve as an inner conductor

Package Include :

1 x 2 DbI SMA Male RP Antenna