Post navigation For Titan Extruder Stepper Motor 4-lead Nema 17 22mm 42 Motor for 3D Printer l29k R166 R166ZZ R166RS R166-2Z R166-2RS ZZ RS RZ 2RZ Deep Groove Ball Bearings 4.7625 x 9.525 x 3.175mm 3/16″ x 3/8″ x 1/8″