Bathroom Towel Racks Does Anyone Know How To Remove The Old Silver Towel Racks That Come Standard In Bathrooms?

Does anyone know how to remove the old silver towel racks that come standard in bathrooms? - bathroom towel racks

I can remove much was actually exposed to the towel, but how to get the two ends of the wall? which the ends of the holes where the bar is to be placed in the rack. Please help, I appreciate it, thank you ..