Tackle the toughest jobs with the HERCULES® 12 Amp 1-9/16 in. SDS Max-Type Variable Speed Rotary Hammer. Equipped with a high-performance heavy duty hammer 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, rotary hammer, and hammer only. The electronically controlled motor maintains constant power under load to keep the hammer at top performance during heavy demo applications.