The D25404K Features: • 8.3 Amp motor provides high performance and overload protection. • Hard-hitting hammer mechanism for fast and efficient penetration. • Fully sealed gearbox engineered for long life by keeping grease in and dust out. • Accepts SDS bits from 5/32'' to 1-1/8''. • Higher drilling capacity than compact drilling hammers for increased productivity in 1/2'' & larger applications. • Less weight than large drilling hammers reduces user fatigue in 5/8'' & smaller applications. • Chipping (Hammer-Only) mode allows user to perform light chipping applications. • Rotation-only mode for wood and metal drilling (using SDS-to-Round Shank Adapter). • Dual wall housing construction with rubber mounts between isolates vibration to inner housing. This reduces user-felt vibration causing less fatigue. • Variable speed allows for precise hole placement. • Multiple O-rings and dust seals prevent dust from entering the tool for extended hammer mechanism life. • Factory-set clutch reduces sudden, high-torque reactions if bit jams. • 360º Side Handle is easily adjustable for user preference or use in tight spaces. • Removable / replaceable chuck allows quick installation of 1/2'' round shank chuck and permits easier service. • Modular design provides easy access to switch, cordset, brushes, motor and gear case for ease of service. • Switch and brushes designed for long life in dusty, contaminated environments.