Height adjustable: the height can be adjusted by knob, which is used to adjust the height of objects and level in physics, chemistry and biology experiments. High quality material: made of high quality materials, with high hardness, rust prevention and resistance, and reliable materials to durability. It can be adjusted within a height range of 90mm, which is very convenient to use. you can manually adjust the height of the stand as needed. This product is suitable for all types of spirit levels, ground measurement tools or other laboratory equipment. Very suitable as a tool for auxiliary measurement. Woodworking Machinery Router Lifter Adjustable Engraving Laboratory Lift Platform Experiment Plate Table Manual Stand Application:Small equipment suitable for physical, chemical and biological experiments. Durability and stability:the structure is very stable, - and has a long service life. Colour:Black Material:Aluminum alloy Size: Reduced size:90x90x26mm Expanded size:90x90x90mm Adjustable height:30-90mm Package Contents: 1 * scissor lift table Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours Hope you have a pleasant shopping experience!