Most towel bars come with all the pieces and equipment needed to attach them to your bathroom wall safely. You'll just need a few tools and about an hour to mount it. The biggest thing to consider ...

If the towel bar is the right length you may be able to mount one, or both of the escutcheons, directly to the wall studs behind the drywall. Use 1 3/4-inch drywall screws to mount the anchor plates.