All blades 1.1/2" (38mm) by 3/8" (10mm) section. Massive in section, these were designed to reduce vibration and be stable in use. Because of their shear bulk (overall length between 21 1/2" - 546 and 572mm) these scrapers can be used with large overhang form the tool rest. Excellent for large bowl work, platters and deep hollowing. Each scraper has an overall length of 21" /525mm with a handle 14" / 350mm long.