Need help removing 10mm bolts

I have an '07 Prius base model. I would like to remove the black plastic liner in the center console. If you take out the coin tray and the flexible mat from the console you see two 10mm bolts. The bolts appear to have to shiny resinous material in the center. When I try to remove these bolts with a 10mm socket the socket slips around the bolt and is starting to round out the edges. Does anyone know how to get these bolts out? Is there something that lies beneath the resin I should know about?

 

Thanks for all the suggestions. The 10mm socket got out one of the bolts and a 3/8" got out the rounded one. To get the liner out I'll have to remove four small screws, two on each side of the console below seat level. Will need some time before I can try that.

I am trying to see if Aux wire was run up to the console. The base Prius doesn't have Aux but the wiring may be there. If so, installing a 3.5mm audio jack should be easy. Getting Aux at the other end would require upgraded head unit or Car2Aux type device.

Edited to add there was no resin in the bolt heads. It just appeared that way when light was shining on them.

 

It turned out to be easier to remove the whole center console than the plastic liner. Remove the two 10mm bolts described above. Then pull off the front trim piece that contains the cup holders. You dont need any tools for the trim piece, it has two snaps near the carpet and two up on the console. Pull on it near the carpet - it will come loose. With the trim piece gone there are two screws near the carpet, one on each side of the console. With those out, the whole console lifts off revealing the wiring to it.

There is no Aux wiring running to the console in my base Prius. It would be relatively easy to add it because there is a wiring channel under the console beneath the carpet to the dash area. Just thought I would let everyone know what I found out.