Screws into steel plates without drilling holes to reduce workability.
The blade has a special shape for improved drilling speed and less work time.
Work with an impact driver
Since it is compatible with square bit No.2 and Phillips bit No.2, you can use a square bit to screw it in to make your head difficult to fall off.
The outer diameter of the screw is 5mm, but it almost passes through a 4mm hole.