Models View all Ball screw (SFU1605) 46 2109 20 Ball screw nut housing (DSG16H) 29 1461 0 Profile 40x40 26 1410 0 Stepper motor NEMA 23 (CS-M22323) 23 1383 3 Ball screw nut (RM1605/RM1610) 28 1342 0 Profile 40x80 12 704 1