This steel round file is made of T12 tooling steel for longest time use.Feature:* Made of tooling steel T12.* Heat-treated, hardened and tempered at 57-62HRC* Sand blasting finish.* Sharpest tooth made of auto cutting machine* Superquality.PictureFor more infomation, please contact us. The professional round file will be provided to you. Weclome to inquiry and order.
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