Features [Standard Size] With its standard 8mm rod diameter and 4mm hole, our dial test indicator centering holder can be easily connected with dial indicator, making it convenient to use. [Arc Shape] The arc shaped dial indicator holder is ideal for special scenarios to locate the center of shafts or holes on machine tools with ease and accuracy. [Premium Material] The dial indicator arc holder is made from steel, assuring a sturdy construction that is not easy to deform, ensuring a reliable performance. [Advanced Protection] The centering indicator holder has undergone black treatment for rust resistance, which helps prolong its service life. [Versatile Holder] Our dial test indicator holder serves as a multifunctional stand that is suitable for equipping test indicators with valve stems or dovetails, making your dial indicator operation more efficient. 1. [Standard Size] With its standard 8mm rod diameter and 4mm hole, our dial test indicator centering holder can be easily connected with dial indicator, making it convenient to use. 2. [Arc Shape] The arc shaped dial indicator holder is ideal for special scenarios to locate the center of shafts or holes on machine tools with ease and accuracy. 3. [Premium Material] The dial indicator arc holder is made from steel, assuring a sturdy construction that is not easy to deform, ensuring a reliable performance. 4. [Advanced Protection] The centering indicator holder has undergone black treatment for rust resistance, which helps prolong its service life. 5. [Versatile Holder] Our dial test indicator holder serves as a multifunctional stand that is suitable for equipping test indicators with valve stems or dovetails, making your dial indicator operation more efficient. Spec: Item Type: Dial Test Indicator Centering Holder Material: Steel Shank Diameter: Approx. 8mm / 0.31in Hole Diameter: Approx. 4mm / 0.16in Use: Used for connecting dial indicators, test indicators Features: 1. Suitable for special scenarios with arc lever 2. Hard steel with black treatment, not easy to rust PackageList: 1 x Dial Test Indicator Centering Holder 1 x Storage Box Package List 1 x Dial Test Indicator Centering Holder 1 x Storage Box