Features Rectangular Structure The rectangular rod structure is more sturdy and reliable, which provides better clamping force for the test dial indicator and ensures the stability of the measuring tool. Aluminum Alloy The support bar of the test dial indicator is made of excellent aluminum alloy material, which has high strength and good durability, and can maintain stability during long-term use. 100mm Connecting Rod:The length of the connecting rod is 100mm, which can meet most measurement needs and facilitate accurate measurement by users, easy to install and disassemble. 6mm and 8mm Hole Diameter - This support rod is equipped with 2 clamping hole diameters of 6mm and 8mm, which are suitable for different measuring tools and provide a wider range of applicability. Convenient 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. Rectangular Structure The rectangular rod structure is more sturdy and reliable, which provides better clamping force for the test dial indicator and ensures the stability of the measuring tool. 2. Aluminum Alloy The support bar of the test dial indicator is made of excellent aluminum alloy material, which has high strength and good durability, and can maintain stability during long-term use. 3. 100mm Connecting Rod:The length of the connecting rod is 100mm, which can meet most measurement needs and facilitate accurate measurement by users, easy to install and disassemble. 4. 6mm and 8mm Hole Diameter - This support rod is equipped with 2 clamping hole diameters of 6mm and 8mm, which are suitable for different measuring tools and provide a wider range of applicability. 5. Convenient 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. Specification: Item Type: Dial Test Indicator Bar Material: aluminium alloy. Length of connecting rod: approx. 100mm/3.9 inches Rod handle diameter: approx. 9 x 9mm/0.35 x 0.35 inch Diameter of clamping hole: approx. 6mm/0.24inch, 8mm/0.31inch Packing List: 1 x Dial Indicator Support Bar Package List 1 x Dial Indicator Holder Bar