Perfect for our 150mm test tubes, these test tube rings can reduce the space and make chambers within the tube.
 
This promotes a humidity gradient and a feeling of safety for species.
 
Perfect for species such as messor.
 
Included:
5 rings designed to fit 16mm x 150mm Ant Antics test tubes
1 Applicator for easy insertion.
**Test tubes not included**
 
Simply click the ring onto the end of the applicator, insert it into tube until the ring has gripped the sides of the tube snugly, then remove the applicator. Simple.