The Rockwell RK2522K2 Cordless Sonicrafter with Universal Fit System and (2) 12-Volt lithium batteries is the perfect go anywhere and do anything multi-tool. No more searching around or shopping for the proper brand blade. The Cordless Sonicrafter will allow other brand blades to fit securely without slippage on the Universal Fit System. The RK2522K2 Cordless Sonicrafter also has variable speed control which allows for precision cuts when tackling detailed jobs or even heavy duty tasks. Its effortless design, and flexibility as a multi-tool, will make it your go-to and go-anywhere tool on the jobsite or around the house. Whether you"re a professional or an avid do-it-yourselfer, the all-in-one and versatile 30-piece Rockwell RK2522K2 Cordless Sonicrafter kit with Universal Fit System gives you the ability to sand, polish, scrape, and cut a wide variety of materials without a cord so it can go anywhere and tackle any job. With its two 12-Volt lithium batteries, there is no downtime. Lithium batteries can be charged anytime without memory effect, and hold their charge longer without draining or waning like a standard battery. The included quick charger, along with the 2 batteries, will assure there is no downtime waiting for a battery to charge. It is an effective tool to help streamline any job tasks. It"s portable, cordless, and adaptable. The variable-speed operates with microsonic high-frequency oscillation to produce smooth, safe movements without kickback. It will be your go-to-tool for all your projects like scraping to remove paint, old caulking, rust, stain, polish, or grout. Use it to score ceramic tile, remove and cut carpeting, or sand and polish those hard-to-reach spaces. Easily switch blades to cut wood, thin metals, fiberglass, masonry, plastic, flooring, cement board, and even vinyl siding. It would take various other tools to do what the all-in-one Rockwell RK2522K2 Cordless Sonicrafter can do in less time, less effort, and less hassle.