Cam-out recess prevention is critical in assembly of screws with internal drive systems. The ACR® Phillips ll drive system prevents the driver bit for disengaging from the recess. Additionally some applications require the operator to assemble the screw in an off-angle position. Free catalog and engineering support can be found at www.semblex.com br br For more product information, please visit br br Company wepage: br br Phillips Square Driv® (PSD®) and (ACR® Phillips ll®) Drive Systems are registered trademarks of Phillips Screw Co.