Easy Wood Tools Ci1 R4 4 in. Radius Carbide Cutter is a razor-sharp carbide cutter designed specifically for Easy Wood Tools Ci1 Full Size (both handled and un-handled) and Pro Series Roughers. This cutter comes standard on each tool and is i for roughing and inside work on larger bowls. It features a slight crown that creates a 4-inch radius arc, with dimensions of 5/8" by 5/8" square. Please note that this cutter is not interchangeable with any other Easy Wood Tool or tools from other brands, except for the models mentioned above. Model Number: 1400