Features Fine Crafting: Crafted from high-quality copper with precision workmanship, ensuring reliable performance and longevity, perfect for 3D printer applications. Efficient Performance: This stepper motor operates with low power consumption, providing stable speed, minimal noise, and high efficiency for 3D printer extruders. Reliable Workhorse: Equipped with quick heat dissipation, 0.3N·m large torsion, and high accuracy, this 42 step motor delivers dependable and precise functionality. Dual Output Shafts: Featuring dual D-type output shafts for secure driving, with the default 23mm configuration, ensuring reliable and safe operation. Easy Installation: Designed with a lightweight and compact size, this 2-phase 4-lead motor is easy to install, making it ideal for various 3D printer applications. Specification: Item Type: 3D Printer Stepper Motor Model: 42BYGH34-1304B Body Height: Approx. 34mm / 1.34in Torsion: 0.3N·m Current: 1.3A Shaft Diameter: Approx. 5mm / 0.2in, D Type Front Shaft Length: Approx. 20mm / 0.79in Rear Shaft Length: Approx. 10mm / 0.39in, socket type. Note: The default configuration shaft is 23mm / 0.91in(approx.), the wiring length is 30cm / 11.81in, 70cm / 27.56in, 1m / 3.28ft(approx.). Lead: 2 phase 4 lead (black A+, green A-, red B+, blue B-). Package List: 1 x 3D Printer Stepper Motor Package List 1 x 3D Printer Stepper Motor