High Speed Steel Saw Blade & Mandrel. This is a new high speed steel saw blade & mandrel. High speed steel saw blades are used for cutting all kinds of metal. The shank measures approximately 1/8" (3 mm) The blade measures approximately 1" (25 mm) in diameter. We work hard to update our descriptions and pictures of our merchandise. As part of a process of ongoing innovation by our suppliers, newer versions of the item shown may be shipped before we are able to complete an update. As a result there may be a slight variation in color and design.