This package of replacement blades for the Crain/Gundlach No. 450 Deluxe Strip Cutter includes twelve blades. When used in the No. 450 Deluxe Strip Cutter, they can cut wide architectural strip straight in a single cut. They can also cut regular strip straight or diagonally in one cut. The packaging includes a clear plastic box with a lid that snaps shut to protect blades in storage. Blade dimensions: length 1.87″, width .48″, thickness .040″.