Suitable for use with all variable speed rotary tools, the Tungsten Sharpener has an airtight design to stop toxic dust particles and a clear top for viewing the grinding process. The extra large, two sided, diamond wheel allows for a quick sharpening process and is long lasting. Light weight and durable. Supplied with 1 x Mandrel, 1 x Set of Collets, 1 x Clear Lens and 1 x Diamond Wheel.