2Pcs M8 X 1.25 Hss Machine Use Metric Screw Taps Tapping Bit For Thread Repair Contain: 2pcs M8x1.25 Metric Thread Taps, Thread Diameter: 6.3mm, Pitch: 1.25mm, Total Length: 2.8 Inch / 72mm, Working Length: 0.82 Inch / 21mm, Shank Dia: 0.24 Inch / 6.3mm, Square length: 5mm. Used for new thread tapping, repair damaged or blocked threads. M8 x 1.25 tap has high hardness and can be used for thread processing on aluminum alloy, copper, iron, stainless steel. Material: High speed steel metric taps run at high speeds, High hardness, wear resistance, and good toughness. Titanium coating for improving wear resistance, hardness, heat resistance, lubricity. Application: Suitable for drill presses, tapping machines, CNC and milling machines. Used with tapping oil to get higher quality threads and more durable taps. Notice: Machine tapping taps need to maintain a better stable working environment and should not be used on handheld electric motors, as they may break easily. It would be better if used together with tap chucks with overload protection.