Clear Plastic test tubes 
Two sizes: 
100mmx16mm 
150mmx16mm
 
Each test tube is sold in the either a pack of 5 or single tubes. These tubes are suitable for our test tube feeders and test tube connectors as well as our test tube holders. 
 
Great for keeping your ants in or storing honey or seeds. Clear and great 16mm outer diameter size ideal for test tube changes of a growing colony! Especially when the water reserve is running low!