Radio bolt, grommet

[clicht]

Hi,

Thought this would be a beter forum re polo forum,
I got a new cd headunit for my car,but before i install it, i would like to get the bolt/screw that fits in the back of the unit, that a rubber grommit goes onto and that fits in the hole at back of dash area where installed. Where can i get this?Hope the above makse sense.
Thanks

[99_FGT]

Is there one on your existing HU? Can't you take that one off?
It isn't absolutely essential though unless your HU is not adequately fastened at the front.
Al..

[clicht]

The one on the existng HU is loked in tight !
Do you know hat this "thing" i called ?
Thanks

[clicht]

Anyone know where I can buy this ????