This high precision Dewalt jigsaw has a 4-position pendulum action that controls the aggressiveness or smoothness of the cuts together with a full wave electronic speed control that ensures the blade speed is maintained under any load for a consistent finish across a range of materials. The DW331K has a patented anti-vibration counterbalance mechanism with a rubber grip to provide a smooth operation. The patented keyless blade change system is quick and easy to use and is compatible with T-shank blades. The soft start feature allows you to easily align with the material to ensure accuracy at the start while the switchable dust blower keeps the line of cut clear of dust. Other features include a tool free adjustable shoe with anti scratch cover bevels to 45° in both directions, and a tapered saw blade roller to control blade deflection at the maximum depth of cut.The DeWalt DW331K is compatible with DeWalt flush cutting blade DT2074 and has a modular construction for trouble free servicing.