Features:* Durable and easy to use, a good assistant for work and life.* Complete accessories, perfect to meet the demands of work and life * Metal shell, strong magnetic carbon brush.* Sturdy and durable, long service life. Specifications:* Model: RS550 Motor * Material: Metal * Size: Motor Length: 75mm Motor Diameter: 37.5mm Motor Shaft Diameter: 9.4mm * Motor Gear: 13 Teeth * Voltage: 18V * Applicable to:Suitable for 13 Teeth 18V Motor RS-550VC-8518 For GSR 18V * Quantity: 1Package Contents:1PC RS550 Motor 13 Gear Drives:Conversion: 1 inch=2.54cm, 1cm=0.393 inch esNote:1. The actual colors of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.2. Please allow slight manual measurement deviation for the data.