The Bosch drill combines the new generation control with the compact integration of the battery manager. It combines an EC brushless motor which consumes enough power for 535 yuan-pound ke flow. It features a robust bosch compact design for professional results in a compact design. Has Variable speed settings: one for High Speed ​​(0-1900 rpm) and the other you old cordless drill has control , that the independent risk of Sudden reaction of the rotating torque Vtst