DEWALT D28110 4-1/2-Inch Small Angle Grinder 7-amp AC/DC 11,000 RPM motor designed for faster material removal and higher overload protection Quick-change wheel release allows tool-free wheel removal without need for a wrench Low-profile jam-pot gear case increases durability and allows tool to fit into tight spaces Oversized protected spindle lock button provides easier and quicker wheel changes Two-position removable side handle provides increased comfort and control