Compatible with Mac Allister, it is adapted to the 10mm shaft diameter lawn mower hub structure to ensure firm fixation, not easy to fall off or loosen, and improve machine stability. Each collar has an inner diameter of 10mm, an outer diameter of 18.5mm, and a thickness of 0.4mm, ensuring high matching and reliable performance. Made of steel, it has good tensile strength and wear resistance, and is suitable for long-term high-speed rotating environments. The structure is simple and can be easily installed or disassembled with standard spring pliers, which is suitable for professional technicians and DIY users. The sleeve contains 100 spring collars, suitable for batch replacement, maintenance or as a repair spare part., Manufacturer: YINETTECH