Features Precision Cutting: Carbide micro drill bits are engineered with a sharp and twisted flute design, ensuring precise and effortless drilling through PCBs. Ideal for CNC, SMT and detailed work. Efficient Design: Each drill bit features a large chip discharge space, providing minimal resistance and smooth chip flow, reducing the likelihood of breaking the drill and ensuring cleaner hole walls. Durable Construction: Made from high-quality materials with a fine grinding process, these drill bits maintain a sharper cutting edge, enhancing longevity and performance during drilling. Versatile Use: Not just for PCB, these micro drill bits are perfect for a range of applications, including model engineering, jewelry making, and working with materials such as plastic, copper and stainless steel. Convenient Storage: The set includes a compact, easy-to-use plastic case with dedicated holders for each bit, enabling quick access and organization, ensuring your drill bits stay safe and ready for use. Description:These bits work fantastic on PCB boards. Sharp and twisted flute will make the drilling be more easy and effortless. They come in a easy-to-use plastic case with a holder for each bit. Drills bits are perfect for delicate drilling through hard materials for model engineering, jewelry repairs, craft work, suitable for PCB, SMT, CNC, mold, sculpture, plastic, copper, stainless steel. Features:Use high quality materials and fine grinding process makes bit more sharp cutting edge.Drill bit has a large scraps discharge space, little resistance and smoothly during the scraps discharge.Reduce cutting force and broken drill, improve the quality of hole wall.Easy to change out and do a great job cutting through the PCB for solder holes.Come in a great storage container that is easy to grab the drill bit you need when you need it. Specifications:Material: Tungsten Steel, White SteelRing Color: RandomCutting Edge Diameter: 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.7mm, 1.2mm, 1.3mm, 1.4mm(Optional) Shank Diameter: Approx 3.175mmLength: 38.1mm / 1.5"Box Size: 8.7 x 5.3cm / 3.42 x 2.08"Quantity: 10pcs per setWeight: 38g(approx.) Package Includes:1 Set(10pcs) x Drill Bits Note: Due to different batches, color of rings might be different from the ones in picture. Please take the real one as standard. Thanks for your understanding. Package List