Home » cabinet-scrapers » What concave and convex cabinet scraper sizes are available? What concave and convex cabinet scraper sizes are available? Chris 28th February 2020 19 Views SaveSavedRemoved 0 What concave and convex cabinet scraper sizes are available? Shop for Cabinet scrapers Concave and convex scrapers usually come as sets containing four scrapers – two concave scrapers and two convex scrapers. These sets of scrapers are measured by their blade width. Each set of two scrapers has a total of ten blades, which vary in width. The different blade widths on both sets of scrapers are: ¼” (6mm), ⅜” (9 mm), ½” (13mm), ⅝” (16mm), ¾” (19mm), ⅞” (22mm), 1″ (25mm), 1 ⅛” (28mm), 1 ¼” (31mm) and 1 ½” (38mm).