About Alvinlite Brand: Alvinlite is a household products brand with a history of more than ten years, focusing on providing high-quality household products with high cost performance to the public. May a happy life be with you! Specification: Item Type: Blade Balancer Material: ABS Color: Gray Product Size: Approx.50x60mm / 1.97x2.36in Weight: Approx. 14g / 0.5oz Feature: 1. When the lawn mower blade is polished and tested for balance, you can select the steps of different diameters on the blade holder according to the blades of different apertures for testing 2. It is easy to see which end of the blade is lighter and which end is heavier, and the heavier end is re-ground Until the weights at both ends are the same 3. The blade balancer has a simple structure and good practicability, and can quickly test the blade balance of the lawn mower Package List: 1 x Blade Balancer 1 x Lid Note: 1. Please allow 1‑2in error due to manual measurement. Thanks for your understanding 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard