1Rectangular Structure: The rectangular rod structure is more sturdy and reliable, which provides better clamping force for test dial indicator, and ensures the stability of the measuring tool. 2Aluminum Alloy: The test dial indicator holder bar is made of excellent aluminum alloy material, which has high strength and good durability, and can maintain stability during long term use. 3100mm Connection Rod: The length of the connecting rod is 100mm, which can meet most measurement needs and facilitate precise measurement by users, easy to install and disassemble. 46mm 8mm Hole Diameter: This holder bar is equipped with 2 clamping hole diameters of 6mm and 8mm, which are suitable for different measuring tools, provide a wider range of applicability. 5Convenient Use: This aluminum alloy extension rod clamp is lightweight and compact, convenient to use and carry, and can help users flexibly use it in various working environments. 1 x Dial Indicator HolderBar