1、STANDARD SIZE: With stand 8mm rod diameter and precise 8mm hole, this centering holder is easy to connect with dial test indicators, allowing for seamless connection. 2、HALF ROUND DESIGN: The half round dial indicator holder is perfect for special scenarios, enabling the user to locate the center of shafts or holes on machine tools. 3、STEEL CONSTRUCTION: Made from premium steel, this curve dial indicator holder is sturdy and resistant to deformation, ensuring long lasting durability. 4、RUST PREVENTION TREATMENT: The curved bracket undergoes black process, making it resistant to rust and increasing its lifespan, even in challenging environments. 5、MULTI FUNCTIONAL: This holder serves as a versatile bracket for mounting test indicators equipped with valve stems or dovetail joints, providing flexibility for various measurement needs. Item Type: Half Round Dial Indicator Holder Material: Steel Shank Diameter: Approx. 8mm/0.31in Hole Diameter: Approx. 8mm/0.31in Use: Used for connecting lever dial indicators and dial indicators Features: 1. Arc shaped, suitable for special scenarios 2. Hard steel with black treatment, not easy to rust 1 x Half Round Dial Indicator Holder 1 x Storage Box