DescriptionThis product is professional and practical 3D printer accessories, made of premium material, durable and long-lasting use. Simple and easy to install, good working performance, sturdy and durable, convenient and practical.Features- Material: Stainless steel, plastic. - Size: 4.50X4.50X5.00cm/1.77X1.77X1.97 inch. - Replace the old and broken one with new one, extending the serving time of 3D printer. - Excellent making process, fine details, high-quality, premium and practical. - Large feeding torque and light weight. Our extruder can be used with all the 1.75mm 3D printing filament. It can fit with most DIY 3D printers. - Equipped with the high-strength engineering materials, which makes our extruder aging resistant. - The 3 : 1 gearing ratio allows the use of smaller motors,making for a lighter weight carriage whilst maintaining reliability and driving force.