The original Worm Drive Skilsaw, often called the saw that built America, just got better. At 1 lb. lighter than its predecessor, this Skilsaw combines the power and durability you expect from SKIL with jobsite-proven, pro-focused features. On top of our legendary Worm Drive, you get the best-in-class Dual-Field™ motor, engineered specifically by SKIL for saws. You've got your hands on the next evolution of the saw famous for cutting truer and lasting longer. This model even comes with a Diablo blade, just to make sure your Skilsaw is tough as nails right out of the box. The SPT77W-72 comes with a Twist Lock Plug.