These high performance screws have the very latest Pozisquare recess which gives it stick fit with the driver bit which as anti-camount ribs. This innovative recess allows higher fastening torque, is safer and more stable, and can be driven with any crosspoint screwdriver. The screw recess provides better protection against driver bit damage. The screws have self-countersinking ribs, tougher neck, 30% stronger shank, are lubricated for easier driving, a faster thread and a self drilling point. Every box includes a FREE ACR Pozisquare driver bit, although all Ulti-mate screws can be driven with standard Phillips and Posidriv screwdrivers.