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Hitachi Power Tools’ DH40MRY Rotary Hammer and the H45MRY Demolition Hammer have excellent impact energy and material removal rates due to new technology that also increases user safety and comfort. Hitachi’s User Vibration Protection (UVP) reduces the full-load tri-axial vibration of these tools by up to 60 percent to significantly decrease end user fatigue while extending tool life by 30 percent. The combination of less vibration, well-designed comfort features, and optimized striking performance adds up to unmatched productivity from the DH40MRY and H45MRY. Hitachi’s i engineering and distinctive designs incorporate UVP technology to minimize vibration while delivering maximum force to the work material. The powerful impacts from the demolition hammer and rotary hammer are offset by a dynamic counterweight and a system of dampers in the switch handle.