ANTISLIP HANDLE DESIGN: Ergonomically designed with knurled antislip handle for stable grip and even force distribution, reducing hand fatigue during prolonged use while remaining beginner friendly MULTISIZE ADAPTABILITY: Designed for shafts with diameters ranging 35-130mm ( 1-1 / 4 " to 5 "), this thread restorer comes with 6 multisize dies, each featuring 4thread specifications to cover metric and imperials pitches for versatile repairs on drive shafts and axles Precisely RESTORATION: The heat treated 65Mn alloy dies achieve HRC60 hardness for sharpness, wear resistant edges that efficiently remove rust and burrs while restoring threads to standard without chipping Durability RUST RESISTANT BUILD: Constructed from alloy steel with anticorrosion surfaces to withstand harsh automotive repair environments, ensuring long term in oily or humid conditions ADJUSTABLE CLAMPING SYSTEMS: Features an adjustable jaw mechanism that securely fits various shaft diameters, eliminating the need for tool changes during different threading repair tasks, Manufacturer: Oxxggkao