A device for grinding rubber brushes for car windshield wipers. Suitable for the grinding of wipers of any size. The equipment is simple and easy to use, and it can be used without removing the wiper blades during grinding. Microcrystals are built into the design, which can quickly restore the edge of worn wiper blades. Compared with buying new wiper blades, this solution offers a cost-effective and efficient alternative. Helps address dirty wipers and annoying squeaks during use. Simple and fast to operate. Suitable for all types of wiper blades, including windshield and rear window wipers. No need to remove the wiper for maintenance. Easy to store and does not take up space.Specifications: Applicability: Suitable for any wiper blade Material: ABS plastic Size (L x W x H): 6 x 3 x 3 cm Windshield wipers are exposed to various weather conditions daily, constantly rubbing against glass and accumulating dirt and dust. Over time, the thin rubber edge wears down, leading to streaks and reduced performance. This grinder removes the worn layer of the wiper rubber and restores it to a clean, functional state, extending the life of the wiper blades.