The Grace USA N3 Screwdriver is a precision tool designed for specialized applications requiring exact dimensional specifications with a .315" wide blade and 9.25" overall length.Grace USA N3 Precision Screwdriver.315" blade width for specific screw applications.041" blade thickness for tight tolerance work9.25" overall length provides optimal reach and leverageProfessional-grade construction and materialsIdeal for gunsmithing precision machinery work and specialized repair applications where exact blade dimensions are critical for proper fit and function.