21V Cordless Rotary Hammer with Carbon Brush - GFDYS01 Model for Professional Drilling

The 21V Cordless Rotary Hammer with Carbon Brush (Model GFDYS01) is engineered for professional construction and renovation work. This compact yet powerful drilling tool outperforms standard cordless rotary hammers with its innovative design and high-performance specifications.

Key features include a 21V lithium-ion battery system with multiple capacity options (5C/3C/10C 2000mAh), allowing users to select the optimal power configuration for their projects. The tool's 650W motor delivers exceptional drilling force while maintaining energy efficiency, making it ideal for extended job site use.

With a maximum drilling diameter of 20mm in concrete and an impact energy of 1.7J, this rotary hammer handles demanding masonry work with ease. The variable speed control (0-600 RPM) and impact rate (0-2000 IPM) provide precise operation for different materials and applications.

The ergonomic 1.2kg design reduces user fatigue during prolonged use, while the integrated LED work light and battery level indicator enhance visibility and power management. The quick-change carbon brush system simplifies maintenance and extends tool lifespan.

This professional-grade rotary hammer is particularly popular in European markets for its combination of compact size and powerful performance. The tool accepts standard SDS-plus bits and includes flat drill functionality for versatile applications.