Dewalt D25951K 29 lbs SDS MAX Demolition Hammer Kit. Take on the hardest concrete with the 29 lbs. SDS MAX Demolition Hammer. Engineered with a hard-hitting German-engineered mechanism, this tool delivers constant speed under load. Featuring SHOCKS Active Vibration Control® technology, to limit vibrations the user feels at the handles, this Tag Ready™ tool, can be quickly integrated into the TOOL CONNECT™ system.