RIDGID 64502 6" Center Guide, Package of 10.

Centering guides can improve the picture by bringing the camera closer to the pipe’s center, allowing the camera to see an equal amount of the pipe wall in all directions. Centering guides also help by raising the camera out of sludge that is often found below the water line.

This helps keep the lens cleaner, longer, reduces wear and tear on the LED Ring. RIDGID recommends using centering guides whenever possible, but if you are having trouble pushing the camera in a particular pipe, one should try it without the guides.