DEWALT Black Gold HSS Drill Bits feature a speed tip and a tough core for enhanced durability. The bits also include a no-spin shank, preventing the bit from spinning in the chuck. They are supplied in a TOUGH CASE+, which is part of a connectable case system compatible with TSTAK®. Individual TOUGH CASES can be clipped together for convenient transportation. These drill bits are designed for metal and multi-material drilling, effectively drilling into wood, metal, and plastic. The no-spin shank ensures a positive lock on the chuck and provides clean, accurate holes. The tough core is twice as strong, increasing durability and reducing shank breakage. An optimised helix angle minimizes pull-through and reduces breakthrough torque by 70%. The Speed Tip has an optimised geometry for faster material penetration and an aggressive web design. This 14-piece set includes drill bits in the following sizes: 1, 1.5 (x2), 2 (x2), 2.5, 3 (x2), 3.5, 4 (x2), 5, 6, and 8mm.