Bondhus PHTX9-6 T8 to T40, 6-Inch Long, Star ProHold Socket Bits Two ProHold buttons provide plenty of holding power allowing the bits to be quickly inserted or removed from any six point socket, with no need for special tools Saves time because precision machining means every Bondhus tool fits precisely into the screw head, minimizing breakage and stripping Bondhus exclusive Protanium steel makes Bondhus tools up to 20-percent stonger than competitor tools and allows the use of more torque Bondhus' exclusive ProGuard finish delivers up to 5 times more corrosion resistance than any other hex or Star tool finish Bondhus stands behind every sale with a "no questions asked" lifetime replacement policy