Feature:1. Durable Aluminum Alloy Material: Crafted from aluminum alloy, this dial test indicator holder bar offers excellent strength and durability, ensuring stability during long term use.2. Square Bar Design: The square bar structure provides enhanced rigidity and gripping power, ensuring the stability of the measuring tool during precise measurements.3. Optimal Length: With a 150mm connecting rod length, this sleeve swivel clamp meets most measurement needs, making it convenient for users to perform accurate measurements.4. Versatile Clamp Diameter: Equipped with 6mm and 8mm clamp diameter hole, this holder bar accommodates various diameter measuring tools, enhancing its versatility for different applications.5. Easy to Use: This height gauge adaptor is user friendly, featuring simple operation, easy installation, and quick fixation and clamping of dial test indicators, ultimately boosting work efficiency.Specification:Item Type: Dial Indicator Extension Rod Holder ClampMaterial: Aluminum AlloyLength: Approx. 150mm / 5.91inHolder Handle Diameter: Approx. 9 x 9mm / 0.35 x 0.35inClamping Hole Diameter: Approx. 6mm / 0.24in and 8mm / 0.31in.Package List:1 x Dial Test Indicator Holder Bar