They are challenging to remove without specialized tools because to its tamper-resistant pin-in Torx drive.
They are challenging to remove without specialized tools because to its tamper-resistant pin-in Hex drive.
Due to their drilled spanner drive, these screws are challenging to remove without specialized equipment.
A conventional slotted driver can be used to install the S-shaped drive, but a specialized tool is needed to remove it.
These screws have three grooves and are challenging to remove without specialized tools.