1Durable Aluminum Alloy Material: Crafted from aluminum alloy, this dial test indicator holder bar offers excellent strength and durability, ensuring stability during long term use. 2Square Bar Design: The square bar structure provides enhanced rigidity and gripping power, ensuring the stability of the measuring tool during precise measurements. 3Optimal Length: With a 150mm connecting rod length, this sleeve swivel clamp meets most measurement needs, making it convenient for users to perform accurate measurements. 4Versatile Clamp Diameter: Equipped with 6mm and 8mm clamp diameter hole, this holder bar accommodates various diameter measuring tools, enhancing its versatility for different applications. 5Easy 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. 1 xDial Test Indicator Holder Bar