Two sets are included. Set A is an umbrella hole ring with a cap sleeve and an umbrella plug. Set B is a cap sleeve for table hole covers and a dust plug. Benefits - Keeps holes clean and protected when not in use by sealing with plugs - Provides two complete configurations to handle umbrella use and hole cover needs - Cap sleeve components help secure and align hole covers for a neat appearance - Quick, tool-free setup for switching between open and closed configurations Key attributes - Function: sealing openings and enabling umbrella installation - Compatibility: designed to work with an umbrella hole ring and with cap sleeves for table hole covers - Components: umbrella hole ring, cap sleeve, umbrella plug, cap sleeve for table hole covers, dust plug - Performance: reliable sealing and straightforward installation Use scenarios - Outdoor patio table with an umbrella hole: install Set A to enable umbrella use and seal the hole when not in use - Indoor table or event setup: use Set B to cap and seal table hole covers with the dust plug for a tidy look - Seasonal storage or transport: switch between sets to protect and maintain table holes during downtime