12 volt gear reduction motor dimentions: Power: 15w-90w Pressure/voltage: Number of pole: 2p; 4p; 6p; 8p Number of phase: single phase or triphase Installation method: vertical and horizontal Frequency: 500rpm/m; 900 rpm/m; 3000 rpm/m; 1500 rpm/m Brake method: with brake or not Reduction ratio: 1/5-1/1800; 1/10-1/1800; 1/10-1/240 Wooden case