The Unger ProTrim 4 inch is a new light weight glass scraper from Unger. It is easy to operate with its innovative design that perfectly fits in your hand and pocket. This Blade has a double edged Blade that has a razor side and a dull side. It is ideal for removal of heavy dirt, mortar, glue, stickers, etc. Thes Blades are made with non-slip material that makes it perfect for cold and wet conditions. It's integrated blade guard locks open or closed for safe storage. Easily and safely open scraper with unlock button so blades are changed in no time.