DescriptionMK3 can choose 12v and 24v two voltage, more practical, It is aluminum plate, which is more durable than ordinary glass fiber board, Great for Reprap Standard 3D Printer.Features- Color: Black. - Material: Aluminum plate. - Size: 16x16x1cm - Made of material, it is durable and long lasting use. - Long-lasting construction allows Multiple use. - 12V connection: a cable connected to one another while connected to a wire 2,3. - 24V connection: a cable connection 2, in addition to a cable connection 3 (1 left unconnected). - The new version of the circuit, whether connected 12V or 24V the power are stable.