2pcs 1mm C3/K10 Tungsten Carbide Precision Straight Shank Twist Drill Bit - Silver Tone($10.99Value)
Size - Cutting edge diameter: 1mm / 0.039"; cutting edge length: 17mm / 0.67"; shank diameter: 1mm / 0.039"; overall length: 40mm / 1.57"; cutting hardness (max