Very friendly product to remove tough rust on knife without painful effort</br>Usage: Soak the rust eraser for ten minutes with cold water</br>Scrubs carefully the rusted part of knife and rinse knife when rust is gone.</br>1.5"x2.5"x0.5"X2piece</br>medium grain</br></br>Product Description</br></br>Very friendly product to remove tough rust on knife without painful effort</br><br/>http://www.amazon.com/gp/product/B00EL1WPCU