The Cat DX31B is an 18 Volt Angle Grinder which can be used with either 115mm grinding/cutting discs or 125mm discs. Featuring a brushless motor for long service life and great battery efficiency. Tool-free quick safety guard adjustment and slim body design adds to the comfort owning this power tool. Overload protection and anti-restart prevention comes standard as safety features. It is dust resistant due to mesh filters which adds to a longer service life.