Description: _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. _x000D_ _x000D_ _x000D_ Features: _x000D_ Use high quality materials and fine grinding process makes bit more sharp cutting edge. _x000D_ Drill bit has a large scraps discharge space, little resistance and smoothly during the scraps discharge. _x000D_ Reduce cutting force and broken drill, improve the quality of hole wall. _x000D_ Easy to change out and do a great job cutting through the PCB for solder holes. _x000D_ Come in a great storage container that is easy to grab the drill bit you need when you need it._x000D_ _x000D_ _x000D_ _x000D_ Specifications: _x000D_ Material: Tungsten Steel, White Steel_x000D_ Ring Color: Random _x000D_ _x000D_ Cutting Edge Diameter: 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.7mm, 1.2mm, 1.3mm, 1.4mm(Optional) _x000D_ Shank Diameter: Approx 3.175mm _x000D_ Length: 38.1mm / 1.5" _x000D_ Box Size: 8.7 x 5.3cm / 3.42 x 2.08"_x000D_ _x000D_ Quantity: 10pcs per set_x000D_ _x000D_ Weight: 38g(approx.) _x000D_ _x000D_ _x000D_ Package Includes: _x000D_ 1 Set(10pcs) x Drill Bits _x000D_ _x000D_ _x000D_ Note:_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.