DDM Allen (Hex) Hardened Steel Driver - 3mm
This bit is 6.25 inches (160mm) in length. This is 1/4" shaft size, and compatible with electric drills and hand tools that accept 1/4" bits.
Since some of our customers have broken these 3mm bits, we are offering them separately so if you need a replacement, you don't have buy the whole kit.
Note: These drivers (due to their long length and very small tips) should not be used for initial loosening or final tightening. They will break if subjected to too much pressure. They are great for reaching tough areas and making bolt removal simpler and faster, but do require care when using.