Kawasaki"s Rotary File and Rasp Set - 4 Pieces is designed for use on power drills and for rasping or filing soft materials. With over a decade of proven sales performance, Kawasaki brand power tools enjoy a well-established reputation for superior design and enhanced performance. Kawasaki products are designed, built and tested to ensure they meet rigorous performance durability standards. All power tools are tested by independent 3rd party laboratories and certified by UL, CUL and or CSA. All tools including chargers and batteries are UL certified.