Item Type: Drill Bit Material: Cemented Carbide Model: Straight Shank Twist Drill Application: Applied to circuit boards Cutting Diameter: Approx. 0.2mm / 0.008in Shank Diameter: Approx. 3.175mm / 0.13in Length of Chip Pocket: Approx. 5mm / 0.20in Useful Length: Approx. 5mm / 0.20in Total Length: Approx. 38mm / 1.50in Outer Edge Angle: 45 Maximum Cutting Depth: Approx. 5mm / 0.20in Size: Approx. 0.1mm / 0.004in, 0.15mm / 0.006in, 0.2mm / 0.008in, 0.25mm / 0.01in, 0.3mm / 0.012in, 0.35mm / 0.014in, 0.4mm / 0.016in, 0.45mm / 0.018in, 0.5mm / 0.02in, 0.55mm / 0.022in Package List 10 x Drill Bit 1Micro fixed shank drill bits, mainly used in circuit boards, easy to install and use. 2Selected highquality hard alloy materials, durable and wearresistant. 3Straight shank twist drill bits can obtain greater drilling capacity under the same torsion. 4Not easy to corrode, but because bit is too thin and easy to break, please be careful when using it. 5The drill bit size is 0.10.55mm, fast drilling speed, and it is suitable for most working environments.