70279 is a 2inch, torx T30 TerminatorBlue impact bit (5 pack). TerminatorBlue Torx bits are impact rated for power tools and rigorously heat-treated to produce a bit lasting 120 times the service life compared to standard bits. With TerminatorBlue Torx impact bits user get the tightest-fit precision-machined driver tips from the company that sets the standard for precision. Wiha's exact-fit Torx tips eliminate excessive bit-wobble for increased driver accuracy. The result is a highly stable engagement with the screw head and a reduction in fastener cam-out that can lead to injury or damage to finished materials.