The new QA-101 and QA-601 Mini Series die grinders are the perfect solutions for grinding and polishing in tight areas, and don’t let their modest size fool you. These grinders reach 25,000 RPM’s and 22,000 RPM’s respectively. Both share many great features: less than five inches in overall length, each weigh less than one pound, and their operating sound levels are less than 85dBA.