Features: Magnetic levitation movement float, load-bearing 500g system. Made of environmentally friendly materials, copper coil, reliable and full of durability. Quiet operation,four mounting holes, 3mm in diameter, with thread. Suspension height: 1.8-2.5cm/0.7-0.98". The diameter of the floating-magnet is up to 5.0cm/1.96". Specifications: Material: Printed Circuit Board Float Diameter: Approx. 5cm/1.97inch Power Supply Adapter: Approx. 3.2x5.1x8.2cm/1.26x2.01x3.23inch Board Diameter: Approx. 11.7cm/4.61inch Power Adapter: 12V 2A (0.2A working current) Type: 2 Kinds of Plugs Optional(refer to pictures) Note: Please allow 0-1cm error due to manual measurement. Please allow for slight color difference due to different display resolution. Package includes: 1x Magnetic Levitation Machine Core DIY Kit