Metal Piercing Jewelers Saw Blades ( NOT for scroll saw, ONLY FOR HAND HELD SAW) Made of hardened and tempered steel for sawing metal and other hardened materials. All blades are 5 inches long, plain end and have regular teeth. These blades are most commonly used by jewelers. Use with hand held frames only. Sold in pack of 12 identical blades, 5 inch plain end.