Description: 【High Quality Materials】This lifting bracket is made of aluminum and PP,featuring high hardness,rust resistance,and durability for long term use. 【Adjustable altitude】Lab platform stand lifting altitude range is 30 mm to 90 mm,easily controlled by a rotating knob for quick and convenient adjustments.It can bear a maximum weight of 0.7kg/1.54lbs. 【Multi function】 Manual platform provides multi functionality,and uitable physics,chemistry and Japanese biology exercise,and providing maximum convenience in any work environment. 【Durable and Stable】Ajustable lifting platform can be used to to support a wide variety of items or elevate objects,helpful satisfy most needs. 【Exquisite Gift】This router lift table is a very suitable gift for friends and relatives who like to do hands on experiments.It is a good and practical gift. Specification: Material: Aluminum Alloy PP Size Chart: Landing: 90mmx90mmx25mm/3.54inchx3.54inchx0.98inch Lift: 90mmx90mmx83mm/3.54inchx3.54inchx3.27inch Adjustable Height: 30mm-90mm/1.18inch-3.54inch Package Includes: 1 Lifting Platforms Stand(6 Pack) Note: Please allow slightly errors due to manual measurement and different monitors.