This lawn mower blade kit includes a balancer and sharpener for both power and hand drills. It ensures safe and vibration-free operation while easily identifying balanced blades. Quick and efficient sharpening saves time and energy. Suitable for mower and tractor blades. Features:- For mower and tractor blades.- Ensures safe, vibration-free operation.- Static Balancer easily shows if blade is balanced.- It can sharpen the blade easily and quickly, less time and less wait.It can save your time and your energy. Package included:1 x Blade Balancer1 x Blade Sharpener Notes:1. Manual measuring, please allow 1 ~ 3mm error,thank you. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the picture.