SA cylinder burs have a barrel-shaped cutting head with a flat end, and they have flutes on their sides but not their end. They are use for deburring and finishing flat surfaces, interior contoured surfaces, and right-angled corners. Cylinder burs are the most common bur shape and are often used as an alternative to a file. These carbide burs remove sharp edges, unwanted projections, and excess material from machined workpieces. They attach to rotary power tools such as die grinders, high-speed engravers, and pendant drills. Their carbide head is hard and resists wear and heat.