Lutz LTZ10206J 4.5in Lg For 10in File Lutz Skroo-zon File Hndls Made with select New England Hardwoods Coated with a premium quality shellac finish for appearance, comfort and durability These handles are equipped with hardened steel inserts which cut a thread right onto the file tang Metal ferrules are made from heavy gauge special kiln drawn steel. Zinc plated to prevent corrosion