Models View all Ball screw (SFU1605) 81 3828 36 Profile 40x40 43 2816 0 Ball screw nut housing (DSG16H) 44 2711 2 Ball screw nut (RM1605/RM1610) 40 2557 0 Stepper motor NEMA 23 (CS-M22323) 30 2204 3 Profile 40x80 19 1252 1