For those who demand a professional-grade circular saw, the SKIL SAW HD77 is a top choice. This worm drive saw boasts a 7-1/4 inch blade diameter and a powerful 4400 RPM, making it capable of tackling even the toughest cutting jobs. With a corded electric power source and voltage of 120V, you can trust in its reliability and consistency. The model is the WORM DRIVE CIRCULAR SAW and it was made in the United States, ensuring quality construction and durability. Battery not included.