NEIKO 10198A Step Drill Bit Set | 5 Piece | Metric/MM | High Speed Steel

[QUALITY]: Each unibit is made with high strength HSS and is black and cobalt-treated for added durability to ensure long service life and longevity.
[135° SPLIT POINT TIP]: The design of the tip angle increases cutting speed with self-centering and prevents walking off the surface of workpiece.
[COMPLETE]: This metric drill bit set has five step drill bits with a two-flute design for faster, smoother cutting and tri-flat shank for a sure grip for higher efficiency of output.
[DESIGN]: The two-flute design clears chips faster and allows particles to escape easily making for cleaner holes at the worksite.
[TRI-FLATTED SHANK]: Each unibit optimally fits into power tools such as impact drill chucks securely and eliminates slip for higher efficiency of output..[PRECISION]: This drill bit set cuts through steel, sheet metal and other surfaces creating relatively clean holes with only a small amount of pressure and deburrs as you drill..[INCLUDES}: Sizes: 6mm shank: (9 steps- 4, 5 , 6, 7, 8 ,9 10, 11, 12 mm),(5 steps- 4, 6, 8, 10, 12 mm) and 8mm shank (7 steps- 6, 8, 10, 12, 14, 16, 18 mm),(10 steps- 4, 6, 8, 10, 12, 14, 16, 18, 20, 22mm) and 10mm shank (13 steps- 6, 8, 10, 13, 16, 18, 20, 22, 25, 28, 30, 32, 35 mm).