Tackle the toughest jobs with the HERCULES® SDS-MAX Type Variable Speed Rotary Hammer. Equipped with a high-performance 14 amp motor and a grease packed gear box with hardened gears for superior life and durability, this tool is capable of withstanding the toughest jobsite conditions. Anti-vibration technology delivers hours of hard use with minimal fatigue. The convenient selector knob switches between rotary hammer and demo modes. The electronically controlled motor maintains constant power under load to keep the hammer at top performance during heavy applications.