... -Q450H Cutting depth of CQF20 Floor Saw can reach 7 inches at most, Diamond Saw Blade for Concrete, Asphalt and General treatment ... can be guaranteed, the service life of the machine and saw blade could be prolonged2. Adopt Japanese NSK bearings, more reliable ... -front, lift-up blade guard provides easy replacement for the saw blade6. Easy-remove, rust-proof water tank provides an optimum ...