These antennas are 5.8G FPV Omnidirectional Cloverleaf Antenna with a protect box on them,very good !
 

Features of 5.8G FPV Omnidirectional Cloverleaf Antenna :
5.8G FPV Omnidirectional Cloverleaf Antenna
5.8G FPV Omnidirectional Circular Polarized Antenna
VSWR:Less than 1.5
With a protect box
 

Specifications of 5.8G FPV Omnidirectional Cloverleaf Antenna:
Frequency Range:5700-5900 MHz
Impedance:50 Ohm
VSWR:Less than 1.5
Polarization:RHCP
Radiation:Omni
Maximum Power Input-watts:20 W
Connector:SMA male/Female can be optional
Coaxial Cable:RG316
Antenna ength: 91mm(RX,including the colver);76mm(TX,including the cover)
                            63mm(RX,not including the colver);50mm(TX,not including the cover)

 
Note: The connector can be customized.