Balltrack - Extension pipes

Pipes for ball track with 40mm grid and 20mm inner diameter holes. 

Pipes has same lock as cubes on one side and outer lock on the other side. 

Set contains lengths 45, 85 and 125 mm.

I recommend printing from light translucent materials so that it is possible to follow the movement of the ball. 

My print is from PETG.

First version I'm going to improve locks.