Home » floor-and-wall-scrapers » What scraper blade sizes are available? What scraper blade sizes are available? Chris 29th February 2020 90 Views SaveSavedRemoved 0 What scraper blade sizes are available? Shop for Floor and Wall Scrapers The size of the blade needed depends on the size of the scraper head. For floor scrapers, the blades can be either 200mm (8 inches), 300mm (12 inches), or 400mm (16 inches) in length, depending on the size of the head. Longer blades are usually used to cover larger surface areas… …while smaller scrapers, which require smaller blades, are more effective at tackling stubborn marks and materials and give the user more control. Blades for wall scrapers are usually 100mm (4 inches) in length.