ITEM NAME:12V 220x220x3mm Hot Bed MK3 Round Aluminum Substrate + 6 Silicone Column Description: Round Aluminum Substrate Voltage: 12v Power: 120w Process: Aluminum substrate Thickness: 3.0mm Size: 220x220x3mm Silica gel column description: 1. Anti-vibration and strong adsorption 2. It is stable and durable. 3. Easy to replace, high temperature resistance, good electrical insulation performance Package Includes: 1x Red Round Aluminum Substrate 6x 16mm Heatbed Silicone Leveling Column.Size: 220x220x3mm. Round Aluminum Substrate. Process: Aluminum substrate. 1x Red Round Aluminum Substrate. 6x 16mm Heatbed Silicone Leveling Column. Easy to replace, high temperature resistance, good electrical insulation performance.