Model Number: RS550; Material: Metal; Voltage: 21V; No load Speed: 400 - 19500 rpm; Torque: 1 N. m; Output Power: 90W; Type: Micro Motor , Motor Length: 75., 1mm/2., 96; Motor Diameter: 37., 2mm/1., 46; Motor Shaft Length: 12mm/0., 47; Motor Shaft Diameter: 3., 2mm/0., 13; Motor Gear Diameter: 7., 9mm/0., 31; Motor Gear Thickness: 6., 5mm/0., 26; Motor Installation Hole Distance: 25mm/0., 98 Cheap RS550 10.8V/12V/14.4V/18V/21V/25V DC Motor with Two-speed 11... - Front panel can be fixed with 2 M4 screws. - High power, low noise. RS550 18V 27500 RPM DC Motor with Two-speed 11 Teeth and High Torque High-speed high torque DC motor, electric drill machine tools. Product Features Specifications: Model Number: RS550 Material: metal. m Output power: 90W Type: Micro-motor Switching: Brush Motor length: 75., 1 mm Motor diameter: 37., 2 mm Motor Shaft Length: 12mm Motor Shaft Diameter: 3., 2mm Motor gear diameter: 7., 9mm Motor Gear Thickness: 6., 5mm Motor installation hole distance: 25mm Place of application: electric drill/screwdriver Package includes: 1 x 9 Teeth DC Motor Front and rear double ball bearings. Dc Motor ChgImposs RS550 25V 19500 RPM With Two-Speed 12 Teeth And High Torque Gear Box For 19500 RPM Motor High-speed high torque DC motor, electric drill machine tools.