The Hikoki GP18DAJ5Z 18V Brushless Die Grinder is a beautifully compact grinder that has a slide switch with a 6mm collet. Ideal for small and narrow spaces, the die grinder offers 5 speed modes that lets you determine the right rotation speed for the job at hand whilst delivering full control over to you. An AUTO Mode offers automatic regulation of rotation performance according to the load whilst the Kickback system ensures optimal safety along. The Overload protection ensures a longer working life of the tool. In transmission mode, the GP18DA produces 7000-29,000 rpm no load speed, while in AUTO mode, it is fixed at 15,000rpm. The Die Grinder, with 6mm collet capacity allows a max wheel diameter of 50mm. The ergonomic and slim design of the grinder allows for comfortable working. A rubber sleeve ensures a better grip while the soft start operation ensures complete control as it powers up. At the heart of the die grinder is the brushless motor that allows you to use the tool efficiently. As part of the design, the tool utilizes every bit of battery power when you need, all while reducing the need for ongoing maintenance by reducing the amount of heat generated and working more efficiently. The technology in creating a brushless motor system allows for perfect symmetry between battery power and usage ensuring you get all the power you need, when you need it.