JEWEL TOOL 144 Piece Piercing Saw Blades 3 grit (TZ-43746-86) are tailor-made for craftsmen who demand precision. These blades aren't just confined to metalwork. While primarily developed for metal, these multifaceted blades can also handle wood and plastic, especially when working on models and miniatures. The product stands out for its versatility, making it indispensable for jewelry tasks and other intricate metal applications. Packaged meticulously in a vinyl pouch, the set comprises 144 blades, organized in 12 bundles of 12 each. With a length of 5.25" (13.3 cm), each blade sports a 1" (2.5 cm) blank region at both ends, facilitating seamless attachment to a frame. It's advisable to employ an adjustable jeweler's saw boasting a wooden handle for optimal results with these blades. Crafted from hardened and tempered steel, the durability and strength of these blades remain unparalleled. A hallmark feature is the 40.5 teeth per inch (15.9 teeth per cm) uniformly made across the blade's length, ensuring impeccable and accurate cuts every single time.