Ring for lawn sprinkler heads, to keep the grass from interfering with the operation. Makes it easier to weed-eat around them without damage, also makes them easier to locate and repair. The small size is for sprinkler heads less than 60mm

The lager size is for rotating sprinkler heads less than 73mm

Bambulabs

Bambu P1P

No

No

.2

100%

Don't use PLA, it won't survive outside.