Description: _x005f_x000D_ 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. _x005f_x000D_ _x005f_x000D_ _x005f_x000D_ Features: _x005f_x000D_ Use high quality materials and fine grinding process makes bit more sharp cutting edge. _x005f_x000D_ Drill bit has a large scraps discharge space, little resistance and smoothly during the scraps discharge. _x005f_x000D_ Reduce cutting force and broken drill, improve the quality of hole wall. _x005f_x000D_ Easy to change out and do a great job cutting through the PCB for solder holes. _x005f_x000D_ Come in a great storage container that is easy to find and grab the drill bit you need when you need it._x005f_x000D_ _x005f_x000D_ _x005f_x000D_ _x005f_x000D_ Specifications: _x005f_x000D_ Material: Cemented carbide, HHS _x005f_x000D_ Ring Color: Mixed random colors _x005f_x000D_ _x005f_x000D_ Cutting Edge Diameter: 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 2.7, 2.8, 2.9, 3.0mm _x005f_x000D_ Shank Diameter: Approx 3.175mm _x005f_x000D_ Length: 38.1mm / 1.5" _x005f_x000D_ Quantity: 10pcs _x005f_x000D_ Weight: 45g(approx.) _x005f_x000D_ _x005f_x000D_ _x005f_x000D_ Package Includes: _x005f_x000D_ 1 Set(10pcs) x Drill Bits _x005f_x000D_ _x005f_x000D_ _x005f_x000D_ Note:_x005f_x000D_ 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.