This oscillating saw blade is made of bi-metal and measures 2¼ length x 1 ⅛ inches width. It has an overall length of 4 5/16 inches, a maximum of 19500 oscillations per minute, and a Starlock Plus connection. The plunge-cut straight-cutting blade has a toothed bi-metal edge that cuts aluminum, copper, plasterboards, plastic, sheet metal, and wood.