The new serrated Equalizer® blades are made of spring steel and sharpened with a unique double serration method. Each serration is itself serrated. This sharpening method gives our new Equalizer® blades a smoother and faster cutting action than ever before. These blades will fit any Equalizer® tool: Equalizer® GT, Excalibur®, Equalizer® Magnum, Thor™, Equalizer® 12V, and Equalizer® Freedom. Made in USA.