1 PC Car Wiper Repair Tool, Portable ABS Vehicle Windshield Wiper Regroover with Sponge, Universal Automotive DIY Cleaning Cutter Maintenance Accessories for Car Truck SUV Van (Green)

No English instructions, and it ruined my wiper blade!

Doesn’t even fit on the wiper. Ended up just ripping it. Very cheap material and not worth the try in my opinion.

On the very first use, my wiper blade was cut very jagged. I tried to do the second wiper blade a little smoother and more steady, but got the same result. My wipers are now worse than they were before.

Did not work for my wipers but it was worth a try.

These make wipers run like they are brand new. I was hoping there was some adjustability to use them more than once but seems like you can only use them one-time per set of wiper blades. Saves a couple bucks nonetheless.

Did not work at all, destroyed my wipers instantly.

No instructions in English and doesn’t sharpen the wiper blade it basically cuts the edge off it’s more of an emergency use tool if your wiper blades are not working properly it’s not really a money saver

Used it and first 4" are just like new. Then I had to fight with it to cut the rest of the way causing tears all along the wiper. I used soapy water as lube and the razor blade dulled just too quick. Had high hopes for this product as I go through a few sets of wipers a year between multiple vehicles. Oh well, maby you'll have better luck than I did?