Exquisite craftsmanship makes this speed regulator hard, durable and good in performance, very practical and reliable. This speed regulator is very easy to install, will not waste a lot of your time, and it is very convenient to use. Made of PVC material, it is durable and practical to use. The length of this product is 7.7cm, the width is 4.5cm and the height is 2.8cm. The rotary knob wire length is 20cm. It is suitable for CNC machine tools, light industrial machinery, rolling stock communication equipment, radar equipment, etc. Item Name: Speed Regulator Material: PVC Input Voltage: DC10-60V Output Current: 20A Frequency: 25KHZ (Control Frequency) Maximum Power: 1200W Cable Length: 20cm Operation Mode: Potentiometer, Current-adjusting Size Details: Size: 7.7cm x 4.5cm x 2.8cm/3" x 1.8" x 1.1" (Approx.) Rotary Knob Wire Length: 20cm/7.87" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. 1. This speed governor is used for DC brushed motors. 2. It is not suitable for the speed regulation of brushless DC motors, and it can also not be used as a voltage regulator or regulator Package Includes: 1 x 20A Speed Regulator