Black Antenna Adapter 7mm Female 6mm Male to For GMC Sierra Chevrolet 

This antenna adapter for GM trucks. If you have an antenna and you did not get one with the GM adapter this is the adapter you need to be able to install kit. This adapter will convert your GM antenna stud from M7x1.0 to the antenna size of M6x1.0.

PACKAGE INCLUDE:
1x7mm female to 6mm male adapter,
1x6mm female to 6mm male adapter.

Note:6 to 6 mm adapter is a free gift for you incase you want extend the short stubby aftermarket antenna from lower position in the car engine hood.

Normally the after market stubby are 6mm screw ,use this adapter you can now equip all the antenna mast you want.

Shipping from outsaid US ,take about 8-14 days arrive normally