1. You do not have the pierce the hole on your car.
2. Just paste the glass mount on the glass directly.
3. For 824-960/1710-2200/2.4; 5dbi.
Specification:
1. Type: patch antenna with adhesive sticker at back side.
2. Frequency: quad bands 824-960/1710-2200/2.4 GHz.
3. Gain: 5dBi.
4. Size: glass mount 50 (L) x 50 (W) x 37.4 (H) cm.
5. Antenna length: 162.6 cm.
6. Connector: available with FME, TNC, SMA.
7. Cable: RG58 for 4 meters or customized length.