Shrimp tower, shrimp small brown

Shrimp tower, shrimp master small brown
The eye-catcher in an aquarium, to crawl a great tower and inhabit, for their shrimp.
The tower is also ideal for prawns as a resting place.
Ca. 11 - 13 cm
Outer Diameter about 3.6 cm
Inside diameter about 2.6 cm
Hole diameter about 0.7 cm
open tube up and down.
Since manual labor vary greatly in length and appearance see picture.