and high quality Small size, light weight, suitable for short-range printing Only 22DB of running sound can make you sleep peacefully High temperature resistance, long service life, can run for 30,000 hours All parts are installed and debugged well, easily operate.Easy to install and simple structure. Module m: 0.5 Pressure angle a: 20° Number of teeth Z: 10 Gear outer diameter Do: 06-0.1 Number of phases: 2 Step angle: 18inch Rated voltage: DC 2.4V Rated current: DC 0.5A Keep rotating torch: equal 120mN.m Phase resistance: 13±10% ohm(20C) Phase inductance: 10 ± 20% Tsui (1KHz) Turning (look with the object): A-AB-B-C Moment of inertia: 15 g.cm Note: The motor gear is the same as the gear, because the gear height may cause errors, If used on other extruders, please check the motor size parameters before purchase. Note:Due to different production batches, there may be slight differences in the products, which not affect normal use. Colour:As Shown Material:Metal Package Contents: 1 * 3D Printer Motor Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.