100% brand new and high quality Features: Studious, practical, simple, clear. There are four mounting holes, 3mm in diameter, with threads. Max Load: 550g Power adapter: 12V 2A (0.2A working current) Board diameter: 10cm/3.94inch Suspension height: 1.8-2.5cm The maximum diameter of the floating magnet is 5.0cm. Color: As shown Quantity: 1 Set Note: 1.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1 x Magnetic Levitation Machine Core DIY Kit