Patio Table Umbrella Hole Insert. The NoBrella Flower Vase fits in any umbrella hole ring set 1 9/16" or larger and provides a quick and easy way to create amazing floral centerpieces. Now you can conveniently add fresh cut or artificial flowers to your patio tables empty and unsightly umbrella hole. The NoBrella provides the perfect opportunity to create a beautiful centerpiece in the patio table umbrella hole ring when you are not using an umbrella. You and your family will absolutely love sitting at the table with the NoBrella in it. Easy to use, easy to clean.