Set of 6 Hardness Tester Checker File Set, HRC40-HRC65 Testing Range, 7.1 Inch Color-Coded Handles Hardness Tester Files with Oxford Cloth Storage Bag for Metal Hardness Testing

Feature: Correct Usage Method First, gently press the hardness test file against the workpiece being tested, then lightly file forward for a stroke of approximately 5 mm. If the file feels as though it is slipping, this indicates that the hardness of the workpiece exceeds that of the test file. Conversely, if you feel a distinct filing sensation, this indicates that the hardness of the workpiece is lower than that of the test file. Method for Maximizing the Durability of Hardness Test Files Begin by using the file with the highest hardness rating—for instance, HRC65 (Black). If this file is able to cut into the material, switch to the next lower rating, HRC60 (Blue). If that file also cuts into the material, switch again to HRC50 (Lake Green). If the file then slips without cutting, this indicates that the hardness of the workpiece lies within the range of HRC50–55. Specifications: Material: Carbon Steel Color: colorful Size: 7.1 inches/ 18 cm Package includes: 6 * hardness tester 1 * Storage bag Notes: Manual measurement, please allow slight errors on size. The color may exist a slight difference due to different screen display

• HRC40-HRC65 Testing Range:6 calibrated files cover HRC40 to HRC65, providing reliable rough estimates of metal rigidity. Color-coded handles speed up identification, boosting workflow efficiency in industrial scenarios.
• Optimal Size:Each file is 7.1 inches (18cm) long—balances well for precise testing. Storage bag (20×5×3cm) is compact enough to fit in toolkits or pockets, enabling on-the-go use across work sites.
• Carbon Steel:Files are made of carbon steel for exceptional hardness, wear resistance, and accurate hardness assessments. Oxford bag prevents tearing/damage, extending the kit’s service life.
• Wide Industrial Use:For metal manufacturing, machinery processing, tool production, and quality control. Simple to use: press file on workpiece
• Contents: Includes 6 precision-files with color-coded handles, covering a hardness range of HRC40 to HRC65, along with a black Oxford fabric storage pouch.