The 6310-20 Milwaukee 18-volt cordless circular saw operates on a 2.4 amp hour nickel-cadmium battery providing the most 2 x 4 cuts per battery charge in the industry. On a single charge, the Milwaukee cordless circular saw can cut up to 145 2 x 4's or 106-feet of 5/8-inch OSB material. Milwaukee uses only no memory effect batteries, always providing the user with full battery capacity. This 6-1/2-inch saw includes an electric brake which stops the blade in seconds. The cordless circular saw can bevel up to 50-degrees for cutting extreme angles. The saw features all-metal upper and lower guards and a rigid aluminum shoe for rigorous job site use. A soft grip handle results in a more comfortable gripping surface. Batteries are interchangeable with other Milwaukee 18-volt tools adding versatility.