Steel + Diamond grit cutting edge with saw teeth shape
Especially for cutting: hard brick, hard tile, Granite (http://tanbrown.org) slab, Marble (http://www.lightemprador.com) slab, plaster board, concrete board and (http://maplered.com) FRP... etc.
Cutting edged of diamond grit are electro-plated with sharp and (http://maplered.com) efficient cutting