The DCK 1400W Corded Demolition Hammer features a 1400W high-quality motor with single impact energy exceeding 17J. HEX quick-change chuck which is general and easy to replace. High-quality piston ring which is durable and air-tight. A variety of shock absorption designs are used to relieve the vibration, and hands will not be tired after long-term use. The impact frequency of 3900 times per minute can quickly complete the demolition.