Models Elegoo Saturn 3D printer partial 20 315 1 NEMA 17 stepper motor PL42H48 (42 mm) 16 859 4 Hiwin MGWR12 linear rail 600mm 11 372 0 Hiwin HGR15 linear rail 600mm 46 2161 1 Hiwin MGW12 carriage 18 484 0 Hiwin HGW15 carriage 47 1286 2