Smooth Plane #3 Solid, high grade cast iron construction ribbed for rigidity. 1.75" carbon steel cutting iron hardened and tempered for a long lasting, sharp cutting edge. Accurately machined surfaces for smooth, precise blade adjustment. See Diefenbacher Tools Storefront for huge selection of hand tools! #3 size is perfect for projects requiring accurate, smooth cuts. 9 1/4" length x 1 3/4" blade width