A wall chaser is a power tool used to chase or cut channels in masonry walls to accommodate electrical wiring or pipes. This tool is typically a hand operated units similar in design to an angle grinder which make the cuts using abrasive discs or masonry blades. Most wall chasers contain drive heads which make provision for mounting either one or two discs or blades at the same time. Dual blades allows for a channel of adequate width to be cut in a single pass. As masonry cutting generates large quantities of dust, a wallchaser typically includes a dust extraction system fitting.Model: CF-4001Rated Voltage(V～): 220VRated Frequency(Hz):50HZBooting power: 3000WNo load speed : 5000r/min