-Expandable metal railings
✅✅ check out other kind of railings out in the links below
https://3dsky.org/3dmodels/glass_railing_1/edit_model
https://3dsky.org/3dmodels/show/railig_06
https://3dsky.org/3dmodels/show/railing_03
https://3dsky.org/3dmodels/show/railing_04
https://3dsky.org/3dmodels/show/cable_railig
https://3dsky.org/3dmodels/show/railing_01
https://3dsky.org/3dmodels/show/railing_02
https://3dsky.org/3dmodels/glass_railing_05/edit_model
https://3dsky.org/3dmodels/show/railing_10
https://3dsky.org/3dmodels/show/cable_railig_02