【Easy Carrying】This total station small prism compact in size, easy to carry around for convenient use. It works seamlessly with measuring instruments. 【Great Quality】360 Degree Reflective Prism is made of glass and Aluminum material, clear and efficient to hold up in the most rugged conditions for years to come. 【Wide Range Of Use】Our mini 360 degree prism provide 360 degree reflection, ensuring quick tracking lock with instruments. Widely used in railway, , steep and other industries for measurement,useful and practical. 【Useful】360 degree prism offset: +29 mm; With a 1/4inch female thread; With a 1/4inch male thread; Suitable for all total station. 【Compact Size】With dimensions of 4x6cm, this mini prism is compact and lightweight, making it easy to carry around on site or store when not in use. Specification: Material: Glass Size Chart: 4cmx6cm/1.57inchx2.36inch Package Includes: 1 360 Degree Mini Prism Note: Please allow slightly errors 1-2cm differences due to manual measurement.Customer satisfaction is our primary concern. If the product is somehow cracked or broken during shipping, please feel free to contact us. We will try our best to give you a satisfactory solution.