The Panasonic Cordless EY46A2 125mm Grinder is capable of performing a wide range of cutting and grinding tasks. It is a powerful, compact and efficient machine with Tough Tool IP dust and splash protection for increased durability. There is a spindle lock, for quick and easy changing of the disc. The grinder will not start when the battery pack is inserted with the switch in the ON position. Instead, a warning lamp flashes to alert you to the switchs position. This helps to prevent you from accidentally starting the machine when you are unprepared. The Panasonic EY46A2 is also 25mm shorter than its predecessor, making it more compact and easy to handle. It is ideal for work in areas with restricted space, such as under a roof or floor. These tools have a sensor in their body that detects the battery voltage and changes the current and voltage flow for optimum performance. Compatible with both 14.4V and 18V Panasonic batteries. Specification Disc Size 125mm No Load Speed 10,000/min.