Name: Spiral staircase 18
Formats: 3Ds Max 2015, OBJ
Units: Centimeters
Step Height: 18cm
Number of steps: 21 (it goes up 388cm with the big round floor)
Corona physical materials
Polys: 321,907
Verts: 315,715
unique names
More:
https://3ddd.ru/3dmodels/show/spiral_staircase_7_1 
https://3ddd.ru/3dmodels/show/spiral_staircase_12_3 
https://3ddd.ru/3dmodels/show/spiral_staircase_13_1 
https://3ddd.ru/3dmodels/show/spiral_staircase_8_1 
https://3ddd.ru/3dmodels/show/spiral_staircase_9_1 
https://3ddd.ru/3dmodels/show/spiral_staircase_17_1