ICXLPMC Nema23 Stepper electronic starter 1:4/1:5/1:10/1:20/1:25/1:50/1:100 Extruder Gear 2/4A 0.95-2.4Nm Stepper electronic starter Planetary for 3D Printer(Reduction Ratio 20,57X76mm) ICXLPMC. Thank you for purchasing, and I wish you all the best! Farbe:One Color