High-quality material: Made of high-quality manganese, it has good compressive and tensile strength, is not easy to deform, has strong anti-rust and anti-corrosion ability, has a smooth surface, strong oil resistance, and a long service life. Package contents: The set includes a total of 500 rod-shaft composite parts, different models, suitable for different shaft types and fixings. 【Installation and use】: Installing and fixing the shaft. This shaft. Suitable for factories and workshops. Fixed requirements for different devices. [Main application]: The C-type clamping shaft fixing ring is mainly used to fix equipment parts. Also suitable for chariot wheels, bearings, cylinders, ships, cars, valves, etc.