In many working parts, the threading hole are spread all over side, vertical and horizontal tapping is hard to operate especially huge and heavy parts. In this case universal tapping in any angle is necessary. Multi-position joint ( Universal Head) installs between the up-arm and tapping head, to make tapping spindle moving flexible in vertical or horizontal, it is means 360 degree any position tapping. With TAIPU R & D mechanical safety lock handle, the arm can be fixed at the position for multi-joint movements, the result shows that this lock handle is much more practical and durable than pneumatic lock. With remarkable universal joint, arm is moving smooth to reach all angles, mechanical U-groove lock the head ensuring the tap stays perpendicular and will result in consistent threads every time.