Description: Name: Aluminum substrate hot bed platform Material: aluminum substrate Voltage: 12V/24V Features: 3mm aluminum substrate, hot bed and aluminum plate in one without adding glass Uses: 3D printer printing platform Size: 220*220*3mm Aluminum plate surface for printing surface The middle hole is a thermistor positioning hole, which can be directly attached to the middle without soldering, or can be soldered underneath. Package Includes: 1Pcs Aluminum Heated Bed Note: Power adapter is notincluded