The D25899K 21 lb. SDS Max demolition hammer offers high performance without overheating and features a non-pumping impact mechanism to extend the lifespan of the tool and seals by preventing dust from entering the device. A large rocker switch makes it easy to turn the tool on and off. The powerful and durable 1500-watt motor delivers excellent concrete breaking performance. The large hammer mechanism ensures extreme durability and outstanding concrete breaking capability. The ergonomic inline design provides user comfort during every application. It has a compact, streamlined design. The quick-change chisel setting allows for fast chisel alignment through 12 preset positions. It also features a multi-adjustable side handle.