1.UPGRADED DURABILITY: Featuring double-layer corundum construction, our lawn mower blade sharpener offers enhanced durability and . This tool can be used multiple times, ensuring your mower blades remain in top condition season after season. 2.PRECISE BLADE BALANCING: Included in this kit is a blade balancer compatible with model 42-100, designed to quickly assess the balance of your mower blades. This tool helps maintain the efficiency of your mower by ensuring the blades are perfectly aligned. 3.USER-FRIENDLY DESIGN: Equipped with a standard 1/4INCH shank, this sharpener fits any power drill and hand drill. Installation takes mere seconds, allowing you to sharpen blades swiftly and effortlessly, thus saving time and enhancing blade effectiveness. 4.VERSATILE APPLICATION: Our sharpener isn't just for lawnmowers. It's also perfect for sharpening blades on lawn tractors, rototillers, garden scissors, and other garden tools. This makes it a must-have accessory for maintaining all your gardening equipment. Color: As Shown Material: Grinding Wheel Specification:B Package Contents: 4 x 2-layer sharpening stones 1 x balancer Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.