Jandy AquaPure, PureLink Replacement Part 3-Port Cell Kit, APURE1400 | R0452400 Style_Retro Heads there are wheel bearings on

there are wheel bearings on each side that gives it the ability to spin in either direction with ease allowing it turn and reverse out of trouble areas like the steps or water line

Pentair Sand Dollar SD40 Top-Mount Sand Filter | EC-145320

Enable you to quickly check the salt levels

Dynamic Series IV Model DSF DFML-25C SINGLE

High-efficiency 175 sq ft pool filter cartridge

Jandy AquaPure, PureLink Replacement Part 3-Port Cell Kit, APURE1400 | R0452400 Style_Retro Heads there are wheel bearings onJandy AquaPure, PureLink Replacement Part 3 Port Cell Kit, APURE1400 R0452400 This 3 port cell is designed to use with Zodiac Jandy PureLink AquaPure pool and spa water purification system model APURE1400. Includes cell, O rings, 16 feet DC cord.