The Metabo W9-115 Mini Grinder is an industrial quality angle grinder with a powerful Marathon motor and a slim, ergonomic handle design. It has rotating gear housing and features auto-stop carbon brushes for a longer service life. In addition, it features a Metabo S-automatic safety clutch and vibration dampening side handle for user comfort. Specification Input Power: 900W. No Load Speed: 10,500/min. Disc Diameter: 115mm. Spindle: M14. Weight: 2.1kg.