Couplers are attached using set screws or compression and are used to link runs of the same type of conduit. Non-metallic couplings are attached with solvent cement, whereas threaded couplings are screwed directly onto the pipe. Specification: Color: White Dimensions: 20mm Material: PVC Application Residential electrical wiring : Used in homes to connect PVC conduit pipes for safe wiring installation in walls, ceilings, and floors. Commercial and industrial wiring : Suitable for offices, factories, and industrial buildings where robust wiring protection is needed. Outdoor electrical installations : Its PVC material is resistant to moisture and corrosion, making it suitable for outdoor use in protected environments. Cable management systems : Helps in organizing and protecting electrical wires and cables through conduit systems.