Featuring a hardened surfaces through special quenching, this chainsaw file boasts enhanced durability and wear resistance for extended use Engineered for longevity, this efficient hand file withstands rigorous sharpening tasks, reducing replacement frequency and ensuring consistent Essential for precise chainsaw maintenance, our file is available in 4.0mm, 4.8mm, and 5.5mm sizes, ensuring accurate sharpening for various chainsaw chains Designed for arborists, landscapers, and homeowners, the ergonomic nonslip handle minimizes fatigue during prolonged chain sharpening projects Ideal for forestry work and tree trimming, the high carbon steel construction delivers efficient chain sharpening directly in the field, Manufacturer: XIBEIDIANZI