This Hultafors Plumber's Knife has a built-in file for filing off burrs. The knife blade is made from 2.5mm Japanese knife stainless steel that has been hardened to 57-59 HRC and the edges have been sharpened in several stages with a final honing on a leather strop. The handle and sheath are manufactured of extra impact resistant PP plastic. A unique method for attaching the sheath around a button on work clothes means it does not loosen, but is easy to remove. Blade length: 93mm. Overall length: 208mm.