Product model: 17HS3401S-PGXXX Stepper motor length: 34 mm Shaft size: "D" shaft 16x8mm Motor lead: plug Including connection: 1M double dot line Gear reducer ratio Gearbox model: 3.71-1 5.18-1 14-1 19-1 27-1 51-1 Decrease: 3.71 5.18 14 19 27 51 Transmission length: 29 29 37 37 37 45