This quality drill bit set contains 120 micro-type drill bits in 6 distinct and common sizes: 3/64, 1/16, 5/64, 3/32, 7/64, 1/8inch, with 20 pieces for each size, this metal drill bit suit fits all standard electric drills. Our drill bit set is made of industrial grade high speed steel with an anti rust titanium coating, promising high strength and sturdy, ensuring your high speed drill bits maintain their sharpness. With full grinding treatment process, these bits are designed with a smooth and spiral groove for efficient chip and particle removal; A faster drilling performance is achieved by managing speed, pressure, and heat. boasting a 135° split point design, our mini drill bits cut swiftly and with self centering accuracy; This prevents drill bit "walking" or sliding on the workpiece, ensuring precision in every hole you make. From wood and plastic to steel, iron plate, and aluminum alloy, our high speed steel metal drill bits are engineered to tackle a variety of materials; Ideal for DIY projects, home maintenance, and repairs; Note: not suitable for drilling glass, ceramics, or concrete. Color:As Shown Material:Metal Package Contents: 120 * metal drill bit set for steel Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.