Hayward Micro Clear Retainer Rod 28" (DEX4800R) aladdin Cleaning heads of this type Cleaning heads of this type are useful because they direct water in a moving pattern that helps guide debris through the intended in floor cleaning process this flow switch helps support better flow detection and cleaner overall equipment operation This 28" Micro Clear retainer rod is used in compatible Hayward DE filter applications to help secure the internal filter structure during operation and service It is a smart repair item for service technicians rebuilding a DE filter or pool owners addressing worn hardware during a filter cleaning