The plug head is a pot shape.
Screw set on plug
You can do quick work just by hitting it.
Hammered stopper reduces plug expansion while hitting
Stainless steel.
For ALC and concrete
Delivery time cannot be specified. Regular concrete Fc20N/mm2; Regulation perforated (removes cuts) Screw length that protrude more than the screw diameter from the tip of the plug. Load etc. will vary depending on various conditions. Safety factor is required