Features:* 100% brand new and high quality * Made of high quality material, durable and practical to use * M2 indicator extension, 5 thread 20mm 40mm 60mm 80mm 100mm length * Applicable to interchangeable tools such as dial indicator, altimeter, etc.* Effective length does not include threaded rod. Specification:* Material: High Speed Steel (HSS) * Diameter 5mm / 0.1968 inch (Approx.) * Thread Extension at Both Ends: m2, 5* L25:Length 25mm / 0.9842 inch (Approx.) * L50: Length 50mm / 1.9685 inch (Approx.) * L75: Length 75mm / 2.9527 inch (Approx.) * L100: Length 100mm / 3.937 inch (Approx.) Package Contents:4 * Extension BarsNote:1. The actual colors of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.2. Please allow slight manual measurement deviation for the data.