1Aluminum Alloy Materials: Lifting platform is made of aluminum alloy materials, high hardness, rust proof, corrosion resistant, reliable materials and durable. 2Adjustment Design: Applicable to various construction environments, direction fine tuning, horizontal fine tuning, height adjustment, convenient and quick. 3Scope of Application: Manual lift platform is suitable for woodworking engraving, and also suitable for physical, chemical, biological experiments, etc. 4Good Performance: Applicable to 8 line, 12 line, 16 line level, bearing is about 60kg / 133lb. Maximum ceiling is about 8.7cm / 4in. 5Warm Tips: Please check and tighten screws before use. Please lift the jack to appropriate height before placing heavy objects.