Models FUSHI F688 ZZ ABEC-5 FLANGED BALL BEARING 0 54 0 NEMA14 STEPPER MOTOR WITH LEAD SCREW 8/2/2 300mm 2 48 0 USB 3.0 Breackdown PCB mounted 2 14 0 F688Z Flanged Ball Bearing NO BRAND 6 321 0