Accurate balance : designed specifically for lawns mower , it can quickly identify the balance condition of the , ensuring efficient operations of the lawns mower. Metal materials,wear resistant: Crafted from metal, weighing about 71g, providing additional stability and durability, suitable for long-term use. Multiple apertures compatibility: Supports multiple apertures ranging from 9.5mm to 35mm in diameter, and users can choose the corresponding fixed step according to their specific needs. Easy to operate: The structure is simple and can be used without professional skills, allowing both home gardening enthusiasts and professionals to easily polish and adjust the . Improve life and : Through precise balance testing, ensures that the weight of both ends of the is consistent, effectively reduce wear, and extend the use time of the .