Dura 429-020 2" White SCH 40 PVC Coupling Slip x Slip for use in joining two smooth pipe ends together. To use, simply glue both pipe ends into Coupling to form a joint. Using PVC connectors allows for easy assembly and disassembly without the need for specialized tools. Dura Plastics PVC is made from high quality materials and is perfect for any pool or spa. This item is not recommended for use in compressed air or gas systems.