10pcs 1.0mm Tip Spiral Flute Tungsten Carbide Micro PCB Drill Bits Product Name : PCB Drill Bit;Material : Tungsten Carbide Cutting Diameter : 1.0mm / 0.039";Cutting Depth : 10 mm / 0.39" Shank Diameter : 3.175 mm / 0.125";Total Length : 38 mm / 1.5" Color : Silver Tone;Weight : 39g Package Content : 10 x PCB Drill Bits1 x Plastic Case