They are for electric. But you have to have the coil that unplugs and plugs back in. I don't know if you could use it for gas or not. I can measure the center hole tomorrow if you want me to. Just let me know!!
Sure. On the small one the hole needs to be 6 inches @ the smallest. And the big one needs a hole that is at least 8 inches. I hope that helps! Any other questions just let me know! Thanks
I had no idea that this would be such a wanted item! It was just sitting there not being used!! This is so cool!! I'm gonna go looking for more stuff to get rid of!! LOL!!