The Exact 5275 Quick-helix drill bit set, manufactured by Exact, includes three pieces with sizes ranging from 3 to 30.5 mm and features a HSS-E TiAIN coating with a triangular shank. Key attributes of the set include its quick-helix design and robust construction, ideal for efficient cutting and longevity. Typically, this drill bit set is used for drilling clean and precise holes in sheet metal and similar materials.