Features: 100% brand new product with guaranteed quality. Made of high quality aluminum alloy, sturdy, durable and wear resistant, not easy to rust. Finished screw rod with built-in anti-backlash nut is precise and reliable. Easy to operation, and it can compose multidimensional adjusting frame. It is suitable for production machinery, testing equipment, optical experimental measurement, fine-tuning displacement, precision positioning, quantitative movement, etc.