DescriptionThread plug gauge is a tool to measure the correctness of outer thread size. Thread plug gauge under 100mm is taper thread plug gauge.Thread plug gauge 100 mm above is double screw thread plug gauge.Easy to operate and maintain, supercor performance.Features- Color: Black. - Size: 8.00X0.80X0.50cm/3.14X0.31X0.20 inch. - Material: Bearing steel. - Plug gauge is made of bearing steel material and has high hardness and long service life. - This product is processed by a good heat treatment process. - Handle uses materials that is light in weight, strong in connection and non-skid wear. - Widely used in various high-precision technical fields, such as ,electronic board circuits, molds, precision machinery manufacturing, etc. - The product is used to test that the outer thread size of the work piece is within tolerance.