The 16A motor with 65 JOULES impact energy, 1900BPM, 1700W output is optimal to complete work projects on different kinds of surface.The SDS-Hex system provides the convenience when switching bits without tools. with the voltage of 110v/60 HZ, it's suitable for you to use it at home and business; 1-1/8" Bull Point Chisel, 1-1/8" Flat Chisel The system locks bits automatically to provide max impact energy and dust proof. it gives users maximum control and accuracy. Durable material and forceful impact provides maximum removal for all day demolition Innovative design offers better weight distribution in both vertical and horizontal applications Rotating chisel locks into different positions to optimize work angles Speed control allows for various jobs, protection, and maintains constant speeds Voltage: 110V/60Hz Motor Power: 1700 Watts Chuck Size: 1-1/8-inch (Hex) Max Impact Rate: 1900BPM Speed: 1800 Impacts Per Minute Carrying Case Included: Yes