PF 115 L1 -5-P2-S2 gearbox, the output shaft diameter is 24mm. It is used for 130mm stepper motor, input diameter is 24mm.Gearbox DrawingGearbox Output TypeGearbox Performance ParametersProduct: PF 115 L1 -5-P2-S2 gearbox for 130mm stepper motorOutput shaft diameter: 24mmInput diameter: 24mmApplication: 130mm stepper motor