The DEWALT DWE4120W 4 1/2 in. Small Angle Grinder with Paddle Switch has a 9 Amp AC/DC, 12,000 rpm motor designed for faster material removal and increased overload protection. The high-efficiency motor provides low operating temperatures. A one-touch guard allows for 360-degree rotation of the guard with a single action. The slim, ergonomic body design provides increased comfort in extended use applications and the low profile gear case increases durability and allows the tool to fit into tight spaces. This unit also features a quick-change wheel release that allows for tool-less wheel removal without the need for a wrench. It has a removable 2-position side handle that provides added comfort and control. The 5/8 in. to 11 spindle thread accepts a wide range of 4-1/2 in. accessories. Applications include: Grinding and cleaning welds, preparing weld and steel surfaces, sanding metal for various metal fabrication projects.