Mani Hedstrom File is specially engineered from high-grade stainless steel with a mirror-like finish and a sharp, flawless edge that follows an ISO standard taper of 0.02. 31mm #25 6 per package For rapid enlargment of canals. Durable stainless steel construction. Ergonomically designed handle for increased tactile feel. Mani Hedstrom File is specially engineered from high-grade stainless steel with a mirror-like finish and a sharp, flawless edge that follows an ISO standard taper of 0.02.Each file provides a tactile feel with its ergonomically designed handle with horizontal grooves to perfectly fit the fingers and prevent slipping when used for enlarging root canals and extracting debris. The handle is color-coded and marked with the corresponding sizes for easy identification.Available in lengths of 21 mm, 25 mm, and 31 mm in various sizes, with designated rubber stoppers.