Specifications

Parts:
1, with EPDM washer;
2, re-enlarge hole together.
Specialized using in PC roofing sheets:

Parts:

1, with EPDM washer;

2, re-enlarge hole together.

Specialized using in PC roofing sheets:

1, for PC hollow sheet;

2, for PC corrugated sheet;

3, for PC solid sheet;

4, for PVC corrugated sheet;

5, for all roofing sheets.