Bosch GWS 18V-15 P Professional BITURBO Angle Grinder produces power and performance equal to a corded grinder. For safety the unique PROtection switch immediately shuts down the machine in the event of jamming. KickBack Control prevents unexpected kickback. The Intelligent Brake System shortens the braking time considerably. Comes as a Bare Unit, NO battery or charger. Compatible with all Bosch Professional 18V batteries, including ProCORE18V batteries and chargers (Professional 18V System) Also compatible with AMPShare, the multi-brand battery alliance. Specifications: No Load Speed: 9, 800/min. Disc Diameter: 125mm. Grinding Spindle Thread: M14. Bore Size, Diameter: 22.23mm. Weight: 2.2kg excl. battery.