Replacement Union Kits, Pool Pump Repair Parts, PVC Pool Pump Union Note: This product page only sells Size 1 PC. If you need other sizes/colors, please refer to the Questions & Answers section. Description: Pool pump replacement parts: Replacement union kits suitable for in-ground pools and spa pumps. Easy to install: Pool pump union replacement kits are easy to install and require no tools. Quality material: The union kits are made of high-quality PVC material, which is sturdy, high-strength, and durable. Reliable performance: Spa pump union replacement kits, with their superior design and construction, restore pool and spa pumps to high performance. Size: The union nut's inner diameter is 7.3 cm/2.87 inches, the outer diameter is 8 cm/3.15 inches, the washer's inner diameter is 5.5 cm/2.17 inches, the connector is 5.7 cm x 6.5 cm/2.24 inches x 2.56 inches, and the connector's inner diameter is 3.8 cm/1.50 inches. Specification: Material: PVC. Color: Black. Package includes: As you choose, either 1 set of spa pump unions or 2 sets of spa pump unions. Note: Please allow slight errors due to manual measurement and different monitors.