High Durability Hammering Mechanism. Faster Drilling Speed. Low Vibration. Large Change Lever Located on the Side of the Tool Body for Easy Operation. Angle Adjustment Function. Simple Bit Mounting. Soft and Easy to Grip for Comfortable Operation. Concrete Capacity: 3.4 - 28 mm. Core Bit Capacity: 25 - 50 mm. Impact Force : 3.4 J. Overall Length : 367 mm. Weight (Excluding Cord): 2.9 kg.