Summary

You will need a 10mm square pipe and a number of M3 screws.

[10mm Square pipes]
Length , Number
100.000 , 1 ,
120.000 , 1 ,
140.000 , 1 ,
160.000 , 1 ,
180.000 , 1 ,
200.000 , 1 ,
total , 6

https://denshiman.com/10mm_square_pipe.html