Grommet Poker, I Lost Mine

I use an old antenna mast with the ball knocked off.. just tape the wire to it and push on thru.. if i'm running a 4awg wire, I'll spray some K&N filter cleaner on it.. that is the slickest stuff I've EVER seen.. Besides, the masts are easy to come by in the shop and don't have to worry about pushing a grommet thru the firewall..

There's a tool made for this? I use a broken test light. I'll have to get one of these things.

When I was installing I had one I bought off the Snap-On truck but I was more likely to grab one of my homemade ones.   One thing I know every installer has lying around..........old power antennas. Work great. Buy some screwdriver handles from Snap-On, MAC etc.. or cannabalize some old or broken screwdrivers. Increase the hole for the antenna mast to fit in the handle about 1/2 way through but do not make it to big as you want the mast to stay and not slip when using it. Drill a slightly smaller hole than that through the top(so the mast does not slide all the way through. Knock the mast into the handle. I put it in about the same way that the Snap-On guy would replace my screwdriver shafts. Take the end of the antenna mast to the grinder and put a 45 on it and then take a small rat tailed file and sharpen it up. These worked so well that I usually ended up making them and selling them to other installers. As another mentioned here brake line also works good and can be cut to any length you need.

snap-on has it .. its called a gopher about 2 foot long red and 1/16th thickdont be a pet monkey ..use your dmm

I use an old dipstick. I sharpened the end to a point and drilled a small hole a little bit from the end. I use the hold like the eye of a needle for fish the wire through.