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 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).