Features:_x000D_ _x000D_ Made of high quality aluminum oxide, this platform is rust-resistant and durable. _x000D_ The platform can provides a quite steady lifting performance, very practical. _x000D_ It is convenient to use, the height is adjustable. _x000D_ Widely used for height adjustment of physics, chemistry and biology experience instrument. _x000D_ Professional design,with beautiful appearance,the product is easy to carry and use. _x000D_ _x000D_ Specification:_x000D_ Material:aluminum oxide_x000D_ Size:100*100 mm/3.94*3.94 in_x000D_ Lifting range: 47-143 mm/1.9-5.6 in_x000D_ _x000D_ Package List:_x000D_ 1*Laboratory Lifting Platform_x000D_ _x000D_ Note:_x000D_ Used to adjust the height and position of an object support device for a physical, chemical, or biological experiment to lift an object or instrument_x000D_ Usage: raise and place smoothly, turn the handwheel to raise the front panel to the required height_x000D_ Maintenance: Keep clean after use and store in a cool, dry, non-corrosive place_x000D_ Attention: there is only one lifting platform, not including other items