8 extra long HSS drill bits, 200 mm, high-speed steel, deep drilling.

High-quality material: These drill bits are made of high-speed steel, which offers superior hardness and practicality and is less prone to wear than other metal materials. Extra long length: These drill bits are approximately 200 mm (7.874 inches) long, providing better stability and balance during rapid maneuvers to ensure a full drilling position. Sharp drill bits: These drill bits are extremely sharp and make drilling increasingly easier. 8 specifications: There are 8 sets of extra-long twist drill bits, with outside diameters of: 4 mm, 4.2 mm, 4.5 mm, 5 mm, 5.2 mm, 6 mm, 8 mm, and 10 mm. Wide range of uses: this This drill bit set is perfect for most drilling operations and for drilling holes in aluminum, wood, plastic, and other materials, or for your everyday use.