From the Manufacturer
This revolutionary new grinder features Hitachi's patented IDI (Internal Double Insulation) housing. IDI technology incorporates an aggressively designed aluminum housing that is intertwined with an injected nylon core. This patented design process creates an extremely durable tool with an outer shell wrapped in Aluminum, while the injected nylon core allows the tool to be double insulated. This IDI technology also reduces vibration and heat to extend the life of the grinder. The G23MR is powered by a 15-Amp motor that delivers 3,500-Watt of max output power. The tool-less wheel guard is adjustable for all working angles. Hitachi's has also included its world class labyrinth construction to seal the motor from dust and debris. The G23MR runs at a very quiet 88 dB and comes with a 3 position handle and wheel wrench.
Product Description
9" Angle Grinder, 15.0 AMP with IDI Technology