These blades are made from cemented carbide which can last up to 50x longer than conventional steel blades. They have superior sharpness, for scraping on wood, metal or concrete.
The blade can be turned 360° in the handle to find different radii or sharp points and has an outer diameter on the round section of 17mm (2/3 inch). Used for scraping on windows, frames and mouldings with different inverted radii.