1、Product Information: Stand holder fixed base mounting thread is 27mm/06in, and used for stereo trinocular microscope. 2、Characteristics: Perfect microscope accessories, cylindrical design, exquisite workmanship, with excellent durability and stability. 3、Reliable Material: Base is made of high strength aluminum alloy material, which is firm, precise, safe and durable, not easy to break. 4、Advantages: The inner precision thread is easy for your daily use, compact structure and the kit includes the necessary tools. 5、Professional Manufacturing: This base meets strict production quality standards, stable performance, high reliability, high accuracy. 1 x Base3 x Screw 3 x Gasket1 x Hex Wrench  Item Type: Microscope Stand Holder Fixed BaseMaterial: Aluminum alloyMounting Thread: Approx: 27mm/ 1.06in