3 Pcs Metal File Set, 8-Inch,Professional High Carbon Steel File, Includes Flat/
Superior Material for Long – Lasting Performance ：The files are made of top – grade T12 carbon steel. This high – quality material gives the files a body hardness of 62 – 66HRC. Durable Build：Constructed from top – grade T12 carbon steel with 62 – 66HRC hardness.