Feature:1. Compatible with: Extruder heating kit specially designed for Prusa i3MK4 3D printer, effectively enhancing your 3D printing capabilities.2. Fast Heating Speed: Upgraded extruder heating kit ensures rapid heating to the desired temperature during printing, which can improve your efficiency.3. Easy Installation and Maintenance: Extruder heating block kit is easy to install and disassemble, facilitating maintenance and replacement.4. Perfect Replacement: A superior alternative for damaged thermistors, extruder heating block replacement kit can be securely locked onto the board connector.5. Excellent Aluminum: Constructed with durable aluminum, firm and sturdy, can be used for a long time, featuring a 24V 40W heating rod for reliable performance.Specification:Item Type: Extruder Heating Block for Prusa I3MK4Material: AluminumHeating Rod Voltage: 24V 40WApplication: for Prusa i3 MK4 NextruderThermistor Cable Length: Approx 110mm / 4.33inHeating Rod Size: Approx. 145 x 6mm / 5.7 x 0.2in .Package List:1 x Extruder Heating Block1 x Extruder Thermistor Cable1 x Heating Rod3 x Screws