Switchable dust blower keeps line of cut clear of chips. Quick and easy patented keyless blade change system accepts T- shank blades. Compatible with DEWALT flush cutting blade DT2074, for cutting flush to an edge. Tapered saw blade roller to control blade deflection at maximum depth of cut. Patented anti-vibration counterbalance mechanism and rubber grip provide smooth operation. Full wave electronic speed control with feedback ensures that blade speed is maintained under any load for a consistent finish across all materials.