The Flex LW1509 is a 4-1/2 High Speed Wet Angle Grinder. The compact 4-1/2” grinder is designed for maximum material removal of concrete or natural stone. With its 10000 RPM and 7.8 Amp motor, the Flex LW1509 is the fastest wet grinder in the market. It is intended for all heavy-duty stone grinding applications like bulk material removal, edge breaking, coarse grinding of uneven surfaces and polish preparation work. Features:Material Removal of concrete or natural stoneDesigned for heavy-duty stone grinding applications What's In the Box:Flex LW1509 4-1/2-Inch Wet Angle Grinder