Value Pack of 10: This set includes 10 carbon brushes, providing a cost effective for long term use and minimizing the frequency of replacements for your hammer drill Special Design: These carbon brushes are specifically designed for rotary hammers and demolition hammers, ensuring optimal and efficient power transmission in impacts drilling tools Compact Dimensions: With a size of 20x11x6.4Mm, these carbon brushes are compact and compatible with a wide ranging of electric hammer tools, ensuring a snug fit and reliably contacts Wire Connection: Each brush features an attached wire for easy installation and replacement, enhancing user convenience and reducing downtime during maintenance High Wear Resistance: Crafted from premium carbon steel materials, these brushes offers durability and wear resistance, extending the service life of your power tool accessories, Manufacturer: Mekalero