This 10-inch flat file and blade balancer bundle is ideal for sharpening, deburring, and balancing all your lawn and garden tools. The WORKPRO flat file features an ergonomic anti-slip grip for comfort and control when sharpening. Its durable steel construction has precision double-cut teeth on one side to sharpen tools. Use the single-cut teeth on the edges for deburring metal or softening sharp edges. With its multipurpose design, this file tackles sharpening and finishing jobs for professionals and DIYers. Pair it with the Stens blade balancer, designed to fit 99% of mower blades for proper balancing. Proper blade balance means less vibration and wear when mowing, resulting in a smoother cut. This zinc alloy balancer replaces the Craftsman 64988 and fits most mower center holes. Together, these products form an all-in-one bundle to keep your cutting tools in top shape. Sharpen and deburr with the flat file, then balance the blades with the universal balancer. With one convenient bundle, you'll have the essentials to extend the life of lawn mower blades, hedge trimmers, axes, shovels, and most any bladed tool.