21V Cordless Industrial Brushless Lithium Hammer 4.0Ah Lithium Electric Hammer Features: Cordless Design: cordless design helps you get rid of cord mess, making it more humanized e and expanding the working range. Reliable Quality: made of plastic body with durability and wear-resistance, non-slip and comfortable feeling, the electric hammer can ensure your long-term use. Rechargeable Battery: 4000mAh (note: parallel connection, the actual battery capacity) rechargeable lithium battery has strong endurance and is easy to be recharged via the equipped adapter. The battery is controlled by microprocessor to realize safety conservation and display the remaining battery level. Drill Bits Included: there are 4 types of drill bits (6/8/10/12), can be installed on the machine to meet your daily needs. Wide Application: professional rotary hammer drill delivering powerful impact and hammer strength to complete heavy duty projects on wood, masonry, solid steel and concrete which means that most of the work needs can be met. Specifications: Plug: EU / US (Optional) Battery: 1PC / 2PCS (Optional) Material: ABS Rated Voltage: 21V No Load Speed: 1000r/min Impact Frequency: 4400bmp Load Power: 820W Battery Series Capacity: 20000mAh (10*2000mAh, series connection) Battery Parallel Capacity: 4000mAh (parallel connection, the actual battery capacity) Battery Weight: 579g / 1.28lb Item Weight(without battery): 3148g / 6.94lb Package Weight: 5853g / 12.90lb Package Size: 40.5 * 34 * 11.5cm / 15.94 * 13.39 * 4.53in Package List: 1 * Hammer 1/2 * Battery (Optional) 4 * Drill Bit (6/8/10/12/) 1 * Charger 1 * Dust Guard 1 * Tool Box