Pentair Adapter for MicroBrite to GloBrite | 618040 C4605 The Hayward Spring (SPX0603S) is

The Hayward Spring (SPX0603S) is the OEM replacement spring for Hayward VariFlo and SelectaFlo multiport filter valves

It forms flexible

then finish with standard or finer bags

Reemay 2033 Pleat Count 201 Top Cap: semi-circular handle

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Pentair Adapter for MicroBrite to GloBrite | 618040 C4605 The Hayward Spring (SPX0603S) isThis item will allow you to easily upgrade your old GloBrite LED pool lights to the new MicroBrite LED light or a ColorVision Bubbler. Typically if you have had the GloBrite installed in your pool you're stuck with it, but with this adapter, you can quickly switch to the far superior MicroBrite.