Youtube video of Ceecom Jpole here:  https://youtu.be/0dregdSfio0
 
Ceecom Halfwave end fed J-Pole Antenna.
500W Power Handling
Gain 2.4dBi Front & 1.98dBi Rear.
Built in 4:1 Balan 
Beamwidth: 71 Degree
Front to back Ratio: 1.77dB
Suplied with mounting brackets to fit masts uptp 56mm.
4 Metre 70MHz Band