Feature: The thread diameter of the product is M2.5. The diameter of the rod is 5 mm. The product adopts standard thread and has strong applicability. The product is suitable for dial gauge (please pay attention to the size you need when buying). Fine workmanship, clear thread. Specification: Thread diameter: M2.5 Rod diameter: 5mm Length: 35mm/1.38in; 40mm /1.57in; 45mm/1.77in; 50mm / 1.97in; 55mm/2.17in; 60mm/ 2.36in (Optional) Package list: 1 * Dial Indicator Extension Rod Note: The actual product color may deviate from the photo due to light. There may be a slight deviation in the measurement of product. 1Fine workmanship, clear thread. 2The thread diameter of the product is M2.5. 3The product adopts standard thread and has strong applicability 4The product is suitable for dial gauge(please pay attention to the size you need when buying). 5The diameter of the rod is 5 mm.