1. Suitable for Prusa i3 series 3D printers, supports smooth feeding of PLA/ABS filaments. Optimized structural design prevents clogging and leakage, ensuring high-speed, stable printing.
2. Durable metal components: Brass nozzle (0.4mm), stainless steel throat tube (M6 mm), and 7075 aluminum alloy heating block, paired with brass extrusion gears and U-shaped bearings, ensure high precision and long-lasting durability.
3. Equipped with a 12V heating cartridge (6mm) and a large heat sink (40x40x11mm). Normal operating temperature: 190-250 degrees Celsius. Do not set temperatures above 280 degrees Celsius to avoid damaging high-temperature-resistant components.
4. Features a 42 stepper motor for stable torque output and a 40x40x7 mm 12V cooling fan for rapid heat dissipation, maintaining nozzle stability during prolonged printing.

Specifications:
1. Nozzle: 0.4mm Brass
2. Throat Tube: Stainless Steel M6 mm
3. Extruder Gear: Brass
4. Extrusion Bearing: U-shaped Extrusion Bearing
5. Spring: High-strength Spring
6. Heating Block: 7075 Aluminum Alloy
7. 42 Stepper Motor: Height 40mm
8. Heating Cartridge: 6mm 12V
9. Fan: 40 x 40 x 7mm 12V
10. Heat Sink: 40 x 40 x 11mm