coil uvb

So I'm wondering what's actually wrong with them. I'm planning on getting tube uvb but I will not be able to purchase one for at least a month as my post office is on strike. I have a pet store near me that sells coil uvb but not tube uvb. I'm wondering if it would work for now? it's too cold to...

For my bearded dragon, I use a UVB coil light 26W. I have been checking on this site and on internet about them, as I have rencently descovered that coil lights might not be the best for bearded dragons. I change it every 6 months, and it is not too blinding to look at. Also,on the carton of the...