Gopro mount for Ninebot ES1,ES2,ES4

Modular holder for Ninebot ES1,ES2,ES4
Gopro camera module
You need:
2 aluminum tubes with the size of d8 l15 t1mm
2 bolts din 912 long 35mm
1 nut m4
1 screw m4 long 16mm
1 screw m4 8mm long
1 nut m5
1 screw m5 from 20mm and longer