Steel/Polish/Welding/MansoryTiling/Cementing/Granite installation

What is OOS in this Case?
Steel/Polish/Welding/Mansory/Tiling/Cementing/Granite installation is an OOS Case- Reversible Case

Single line crisp description - Why this has to be OOS?
- Partner have skill issue
-Cutting tool not available
-Welding machine not available with partner and difficlut to carry from one location to another