Ok, I’ve understood.
METRIC-WOOD THREADMixed thread: wood thread at the tip and metric thread at the top for versatile fastening of metal elements to wood.
DUAL INSTALLATIONCan be installed using a Torx bit (head) or a hex wrench (centre).
EASE OF USEThanks to the torx stamp on the head and the hexagonal section in the centre it is possible to fasten the screw both with a torx bit and with a wrench.Installation is easy and versatile.
FASTENING VERSATILITYIdeal for fastening any type of metal element to a wood substructure, thanks to the initial wood thread and subsequent metric thread for steel.