Scraper Stanley 0-28-631 Blades are classified as high-strength offerings through technology, which is used to create most of the blade. For the convenience of experts decided to make two-sided blade. This allows you to use them if you need to use a scraper. Separately, it is worth noting that acquire such large sets of blades, even for practical use (for example, repairing a small amount). Professionals prefer to buy such a snap-together with other related devices.