Size: M18X1.25 Straight Flute Thread Hand Taps. Cutting Direction: Right Hand. Material: Alloy Tool Steel. Straight Flute Thread Hand Taps Straight flute design, used for through hole and shallow blind hole tapping, not for blind hole tapping. Tips 1. Before tapping confirm whether the diameter of the round hole is appropriate, and to take protective measures when working. 2. When tapping, it is necessary to add water or coolant to cool down to prevent excessive temperature and reduce tap loss. If it encounters difficulty in rotation, the tapping should be suspended. 3. Be sure to select the appropriate cutting oil for the complex tapping process and apply anti-rust oil for maintenance after use.