CS Unitec’s EMF150 Wall Slotter cuts parallel channels in concrete and masonry, up to 1-13/16-in. wide by 1-3/4-in. deep. The unit has two parallel 6 in. diamond blades can be easily adjusted for the desired cutting depth and width. With a 20 amp motor that has a no load speed of 7500 rpm, the unit's compact design allows for working 5/8-in. from the edge or corner. A closed vacuum hood makes dust collection efficient.