Lobster Carbide Hole Saw 65mm HO65G

The tip of the tester is bent, allowing for hardness testing of flat, curved, and internal surfaces. If the tester presses against the test material, or if it scratches the object, the hardness is below the hardness indicated on the tester. This set contains six testers, and the hardness is color-coded on the grip. Total Length (mm): 175 File Length (mm): 65 File Diameter (mm): 4.3 Set of 6 Spring Load (mN): -