The HiKOKI GP2S2L Die Grinder has a very powerful 520W high-speed motor and 6mm chuck size giving the operator fast efficient grinding and polishing An extended front housing makes it easy-to-use and access recessed work plus the external brush caps allow for fast checking or replacement when required Other features include a conveniently positioned large auto return lock-on side switch and maximum wheel diameter of 25mm Specification Input Power 520W No Load Speed 25000min Max Wheel Diameter 25mm Chuck Size 6mm Weight 18kg