How to install:
1. Put the PVC circle on the sink hole
2. Put the stainless steel case on the sink hole
3. Put another PVC circle on the plastic case
4. Connect the PP case with the stainless steel case by the central screw
5. put on the stainless steel sink strainer
6. Connect the overflow with kitchen sink basket strainer

Specification:
Material: ABS plastic and stainless steel
Size: As foto showed