Includes a pack of 10 replacement blades for the Crain No. 300 Loop Pile Cutter. These blades have two holes for a blade holding screw on early models of the No. 300 (black plastic body), but also work in later models of this cutter. When used in the No. 300, these blades cut the carpet from the backing, reducing the shearing of yarns and wadding up of carpet in the cutter. The two screw holes make these blades reversible for added life. These blades come in a plastic box with a hinged lid that snaps closed for storage. Blade dimensions: length: 2.31″, width: .75″, thickness: .025″.