Set of 4 replacement copper rods with spring filter knob accessories for solar pool ionizers and swimming pool water purifier treatment. Designed to restore ionizer function and provide reliable spare parts for routine pool maintenance. Key benefits Restores device function: worn or corroded electrodes to allow the ionizer to operate as designed, helping maintain the device performance. Ready to install: Each rod pairs with a spring filter knob to secure the electrode and reduce debris interference for consistent contact and operation. Durable material: Solid copper construction offers good conductivity for ionizer electrodes and reliable service life under normal pool conditions. Practical spare pack: Fourpiece set supplies multiple replacements for seasonal maintenance or backup parts for several units. Features and specifications Function: Replacement electrode rods for solar pool ionizers and compatible water purifier treatment units. Includes spring filter knobs for mounting and filtration support. Material: Copper rods with metal spring filter knobs. Quantity: Set of 4 replacement rods with matching spring filter knobs. Compatibility: Designed for use with solar pool ionizers and similar swimming pool water purifiers that accept replaceable copper electrodes. Verify rod dimensions and mounting style on your unit before ordering to ensure fit. Installation and care Simple replacement: Remove the old electrode, install the copper rod, and attach the spring filter knob to secure the connection. Basic hand tools may be sufficient. Routine checks: Inspect electrodes for visible corrosion or buildup and as needed to maintain consistent ionizer operation. Storage: Keep spare rods dry and protected until needed. Typical use scenarios Seasonal pool maintenance: corroded electrodes at the beginning of the season to ensure the solar ionizer can function properly throughout the swimming period. Spare parts for multiple units: Maintain a supply of replacements for several ionizers at a property or for a small pool service operation. a single unit: Swap in a rod and spring filter knob to restore a malfunctioning solar pool ionizer without replacing the whole device. What to check before Confirm the rod length, diameter, and mounting method used by your ionizer model to ensure compatibility. Compare the spring knob mounting style with your unit to make sure the included knobs will secure the electrode correctly. Contents of the package Four copper replacement rods Four spring filter knobs This set provides straightforward, cost effective replacement parts to keep compatible solar pool ionizers operating as intended.